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15'' rear wheel size for the drag race look

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Old Dec 20, 2004 | 12:32 PM
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From: Beaufort,N.C. near the coast
Car: 92 Z28 Camaro
Engine: 350 TPI : Supercharged
Transmission: TH700R4
15'' rear wheel size for the drag race look

I would like to see some pics of 90-92 Camaros with the skinny fronts and fat rear tires on 15'' Weld rims. I can not make up my mind which tires to go with on the rear of my 92 Z28. I have Weld Pro Star 15''x 8s with 4.5'' backspacing. I want a wide tire, but do not want it to stick out of the wheel well too much. Thank you for any help you may give. I have done a search , but did not find what I was looking for.
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Old Dec 20, 2004 | 01:09 PM
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From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
i have pics on my cardomain site in my sig. granted it's got the 85-90 ground effects but same thing essentially.
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Old Dec 20, 2004 | 03:16 PM
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From: Beaufort,N.C. near the coast
Car: 92 Z28 Camaro
Engine: 350 TPI : Supercharged
Transmission: TH700R4
Thanks xpndbl3, your car looks killer. Are you running 275/60/15 on the rear? I was thinking of some BFGoodrich radial T/As in 255/60/15s for the rear of mine. I am using Mickey Thompson Sportsman skinnies on the front. Do you think the 255s will be wide enough? Tell me what you think. Thanks again.
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Old Dec 20, 2004 | 06:00 PM
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From: Paxton, MA
Car: 1987 Camaro Z28
Engine: 335 TPI Stroker
Transmission: Tremec TKO 500
Axle/Gears: 10 bolt / 3.42
Right now i am running 245/60/15 on my Pro Star 15x8's. A little skinny but they will do for now. I think my next tire will be a 275/50/15 on the same wheel.
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Old Dec 20, 2004 | 06:27 PM
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From: Beaufort,N.C. near the coast
Car: 92 Z28 Camaro
Engine: 350 TPI : Supercharged
Transmission: TH700R4
Beautiful car Tuned port335, I see some people are using 275/50/15s, but I have not seen one in person with this size. Do you think these will fit my 92 O.K.? I want a wide tire in a 60 series, so I can raise the car up a bit to give me a little clearance for the true dual exhaust I have just installed. Thanks again.
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Old Dec 20, 2004 | 08:48 PM
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From: sandusky
Car: 1987 iroc z
Engine: 355 dart platinum 215cc heads
Transmission: <<BLOWN UP TH400>>
Axle/Gears: 10 bolt 4.11's
i have 295/50/15 on mine with weld 15x8 inch wheels with 5.5 inches of backspacing and it fits perfect i just had to pound a little
bit on the wheel well right in the front no problem.
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Old Dec 20, 2004 | 10:14 PM
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From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Originally posted by SharpZ28
Thanks xpndbl3, your car looks killer. Are you running 275/60/15 on the rear? I was thinking of some BFGoodrich radial T/As in 255/60/15s for the rear of mine. I am using Mickey Thompson Sportsman skinnies on the front. Do you think the 255s will be wide enough? Tell me what you think. Thanks again.

right i'm running 275/60R15 or 28x10.50 hoosiers at the track. They fit really well on the car and don't bulge out past the fender line so i'm happy. I'd run the 275 if you could, not much difference in price as well.
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Old Jan 3, 2005 | 03:52 AM
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Originally posted by steve87iroc
i have 295/50/15 on mine with weld 15x8 inch wheels with 5.5 inches of backspacing and it fits perfect i just had to pound a little
bit on the wheel well right in the front no problem.
How about some pics?
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Old Jan 5, 2005 | 09:06 PM
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From: sandusky
Car: 1987 iroc z
Engine: 355 dart platinum 215cc heads
Transmission: <<BLOWN UP TH400>>
Axle/Gears: 10 bolt 4.11's
i have no clue how to post pics could you tell me
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Old Jan 5, 2005 | 09:42 PM
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From: sandusky
Car: 1987 iroc z
Engine: 355 dart platinum 215cc heads
Transmission: <<BLOWN UP TH400>>
Axle/Gears: 10 bolt 4.11's
1.
Attached Thumbnails 15'' rear wheel size for the drag race look-stev2.jpg  
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Old Jan 5, 2005 | 09:58 PM
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From: sandusky
Car: 1987 iroc z
Engine: 355 dart platinum 215cc heads
Transmission: <<BLOWN UP TH400>>
Axle/Gears: 10 bolt 4.11's
2. i know how to post pics now
Attached Thumbnails 15'' rear wheel size for the drag race look-100_0341.jpg  

Last edited by steve87iroc; Jan 5, 2005 at 10:00 PM.
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Old Jan 5, 2005 | 09:59 PM
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From: sandusky
Car: 1987 iroc z
Engine: 355 dart platinum 215cc heads
Transmission: <<BLOWN UP TH400>>
Axle/Gears: 10 bolt 4.11's
this is the only part that rubbed just a little
this is on weld pro stars 5.5 inch backspacing 15 inch wheels tire is
295/50/15
Attached Thumbnails 15'' rear wheel size for the drag race look-steve2.jpg  
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Old Jan 5, 2005 | 10:02 PM
  #13  
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From: sandusky
Car: 1987 iroc z
Engine: 355 dart platinum 215cc heads
Transmission: <<BLOWN UP TH400>>
Axle/Gears: 10 bolt 4.11's
4.
Attached Thumbnails 15'' rear wheel size for the drag race look-100_0340.jpg  
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Old Jan 6, 2005 | 04:52 AM
  #14  
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Huh… are you sure that those are on 15x8’s with 5.5” backspacing? If they are that would imply that those tires would not fit on anything 15x10 (see this thread

The thing is that if those rims are actually that size that makes no sense whatsoever. 295 50 15’s are a very slimier tread and section width to BFG DR 275 50 15 (actually, the 275 DR’s are slightly wider). This is the 275 50 15 DR mounted on a 0 offset rim:


you’re basically saying that your pics are showing a slightly narrower but taller tire mounted on a rim that has a 1.5” offset and the tires are sitting in roughly the same place. In that picture above there was probably about a ½” or less between the tire and the area that you showed as well as a couple of other spots (I could not get my hand in between the tire and those areas), there is NO WAY that you could move it in 1.5”

If I was to guess, based on your pictures and the pictures of my car in the other thread I’d guess that you’ve got those tires on either a 15x10 with 5.5 backspacing or a 15x8 with 4.5” backspacing. Any chance you want to go out and measure one of your rims (that would settle discussions going on in 3 different threads right now). Figuring out what the actual width from lip to lip and then the backspacing from the flange to the lip is would really help figure out what is going on.
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Old Jan 6, 2005 | 12:50 PM
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From: sandusky
Car: 1987 iroc z
Engine: 355 dart platinum 215cc heads
Transmission: <<BLOWN UP TH400>>
Axle/Gears: 10 bolt 4.11's
i am positive those are 15x8 5.5 backspacing and i just got them not to long ago and it says 5.5 inches of backspacing right on the box and yes i have mesured them the tire sticker says p295/50/r15 positve. i am still using the stock spacer that was on it thats probly why. the only place that rubbded was where that arrow was pointing.

Last edited by steve87iroc; Jan 6, 2005 at 12:55 PM.
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Old Jan 6, 2005 | 01:54 PM
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Car: American Iron Firebird
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Transmission: Richmond T-10
Axle/Gears: Floater 9" - 3.64 gears
Originally posted by steve87iroc
i am positive those are 15x8 5.5 backspacing and i just got them not to long ago and it says 5.5 inches of backspacing right on the box and yes i have mesured them the tire sticker says p295/50/r15 positve. i am still using the stock spacer that was on it thats probly why. the only place that rubbded was where that arrow was pointing.
That's definately weird.

I ran 275/50/15 Hoosier Quicktime on a 15x9 Draglite XP with 5.5BS and I had to take the bumpstops off and grind the crap out of the mounts in addition to using an adjustable PHB to center the rearend.

I would think with a larger tire and more offset that you would definately have rubbing problems. Did you ever try to lower the rear end to max travel with the body in the air? That's when I had my biggest rubbing issues.

My issue could've been those Hoosier's bulging too considering they were bias-plys. *shrug*
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Old Jan 6, 2005 | 03:53 PM
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From: sandusky
Car: 1987 iroc z
Engine: 355 dart platinum 215cc heads
Transmission: <<BLOWN UP TH400>>
Axle/Gears: 10 bolt 4.11's
the only thing i have done anything to the rear is put lakewood shocks on and i know that dont make a difference. without the spacer i would have to remove the bump stop and probbly hammer more to the fender well that is weird.
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Old Jan 7, 2005 | 01:11 AM
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Steve, my point was that a wheel that was actually 15x8 with a 5.5” backspacing will not fit with that tire. The wheel may be labeled and sold as such, but that is not what it is. Using the stock spacers would put it right where it would be on any other 3rd gen with discs or aluminum drums, so that is a non issue.

My second point is that if you could measure what your stuff actually measures it would probably help a lot of people here figure out what would fit. As far as what I’m seeing in the pics, I suspect that actually (if you measured it) have a wheel with roughly a .5” offset, like a 15x8 with a 4.5” backspacing or a 15x10 with a 5.5” backspacing
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Old Jan 7, 2005 | 01:19 AM
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On another note, in that pic of my car with the 275 50 15’s on a 0 offset wheel, if you jacked the back of the car the axle could not go to full droop, the tire sidewalls would hit the bump stops which would only allow about 2” of downward travel. If you’re really completely clearing with 295’s your wheels may have closer to no offset.
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Old Jan 7, 2005 | 02:06 AM
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From: sandusky
Car: 1987 iroc z
Engine: 355 dart platinum 215cc heads
Transmission: <<BLOWN UP TH400>>
Axle/Gears: 10 bolt 4.11's
this is what i have for the rim i copeyd this fromsummit where i ordered them.

Product Line Weld Racing Pro Star Wheels
Diameter (in) 15
Width (in) 8.00
Backspacing (in) 5.50
Rim Material Forged aluminum
Center Material Forged aluminum
Wheel Finish Polished
Lug Nut Seat Style Shank
Wheel Construction 2-piece
Lug Nut Shank Length (in) 1.300-1.380 in.
Lug Nut Shank Diameter (in) 0.679-0.687 in.
Washer Outside Diameter (in) 1.270 in.
Hub Centric No
Center Bore Diameter (in) 3.180
Center Bore Diameter (mm) (Not Specified)
Center Cap Included Yes
Offset (mm) 25.4
Load Rating (lbs) 1,200

and thats weird beacuse you said that when you jacked yours up it rubbed but mine only rubbed when it was on the ground.

Last edited by steve87iroc; Jan 7, 2005 at 02:08 AM.
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Old Jan 7, 2005 | 12:40 PM
  #21  
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Car: 84Z/ 87 S-10
Engine: 355/350
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i got 15x10's with 5' backspacing and 15x 7's on front (draglites)
(i forgot how to use image tags)
http://memimage.cardomain.net/member...137_5_full.jpg

Last edited by Intensity_Z; Jan 7, 2005 at 12:46 PM.
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Old Jan 8, 2005 | 12:30 PM
  #22  
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From: shawnee, ks
Car: 87 Firebird
Engine: 5.3 76mm
Transmission: Rossler TH400, PTC converter
Axle/Gears: Strange 12bolt, 3.08s
Tnks Steve87Iroc, i just found my new combo thats going on my firebird, just the look i waslooking for with those 295's, The TAs i have now are just the 215's but hook great in wet or dry, cant wait to try out 295s when i get my new engine in.
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Old Jan 17, 2005 | 02:09 PM
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From: Columbus, In
Car: 87 Camaro
Engine: 406
Transmission: T56
Axle/Gears: 9" ford 35 spline axles
I TOO HAD A SET OF 15X8 WELD PRO STARS WITH 5.5 BS....I HAD 295/50/15 TIRES MOUNTED ON THEM....THEY FIT GREAT...JUST HAD TO CLEARANCE THE FRONT INNER REAR FENDER....THE DID HIT THE BUMP STOPS WHEN JACKED UP.......
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Old Jun 24, 2013 | 06:25 PM
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Re: 15'' rear wheel size for the drag race look

i am putting 295/50/r15s on my 83 camaro with american racing 23s the rim is 15x8 inch i took the bumper off now, the guy at pep boys said they would fit but they would bubble out a little bit, is this true? will they fit and if they rub? what should i do to take care of that? and if they only rub over speed bumps or jacked up thats fine with me i just need to know all of the possabilitys here
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Old Jun 24, 2013 | 06:43 PM
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Re: 15'' rear wheel size for the drag race look

so if i put 295/50/15 on my camaro with no back spacing on a 15x8 inch rim will they fit?
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Old Jun 25, 2013 | 12:07 PM
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Re: 15'' rear wheel size for the drag race look

No backspacing? You need to do some research. And dont bump threads 9 years old.
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Old Jun 25, 2013 | 12:41 PM
  #27  
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Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: 15'' rear wheel size for the drag race look

Heres a thread you might find interesting.= https://www.thirdgen.org/forums/whee...er-cobras.html
If your going to be running a American Racing AR-23 then its a 3.75 BS. that's it. That's all they come in. I tried squeezing a 295/50r15s on that wheel and they did not fit.They went on OK but with 3.75 BS is nowhere near enough to fit that tires tread inside the well.5.5 BS could be a different story. The well/flair did not hit but that's mainly because I babied it.I went down to 255/60r15s rear with that BS and they fit perfectly for me and still give the car a street/strip kind of look.

Last edited by Ron U.S.M.C.; Jun 26, 2013 at 09:05 PM.
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Old Jun 26, 2013 | 05:58 PM
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Re: 15'' rear wheel size for the drag race look

sorry i didnt notice im new to this forum but i appreciate it
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Old Jun 26, 2013 | 05:58 PM
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Re: 15'' rear wheel size for the drag race look

so the 295 50 15s rubbed you say?
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Old Jun 26, 2013 | 09:25 PM
  #30  
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From: Northern, CA
Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: 15'' rear wheel size for the drag race look

You can see where the 295/50r15 rubbed only once or twice but that's the damage caused even with rolled flairs. That shows that the tread is out at least 1/2 in. I hated them . IMO the 255/60r15s in my attached thread above are perfect for the AR-15 because it’s the widest you can go on that wheel without the tread sticking out. The outside of the bulge is in line with the flair and I think that looks best on any tire. The 1/4 mile look is more than just the tires. It’s the whole cars attitude. Side note = Not a lot of guys run the AR-15s because of the BS and I’m sure there are other reasons but I’ve found that with the right tire size the wheel IMO looks great. It’s a clear coated aluminum wheel that only requires soap and water to keep it looking new, you don't polish them or use harsh abrasive chemicals on them "ever" and made by American Racing.


Last edited by Ron U.S.M.C.; Jun 26, 2013 at 09:31 PM.
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Old Jun 26, 2013 | 10:55 PM
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Re: 15'' rear wheel size for the drag race look

thanks man i appreciate it plus your car does look very good and they are a good rim too run i understand it it would be pointless to put such a wide tire on there i would be happy with your set up i have 255s in the rear i just need a smaller set for the front because those to are 255s and even tho there a little thinner due to 15x8 in the rear and 15x7 in the front they could be alot smaller than they already are
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Old Jun 26, 2013 | 11:21 PM
  #32  
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Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: 15'' rear wheel size for the drag race look

235/60r15 = 26.1 diameter
255/60r15 = 27.1 diameter
Take into consideration the diameter when choosing your front tire.
One of the reasons I like the 235/60r15s front is because its 1in. less in diameter than the 255/60r15 and that helps give the car the slight rake I'm looking for. You can definitely see the difference between them.

Last edited by Ron U.S.M.C.; Jun 26, 2013 at 11:27 PM.
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Old Jun 26, 2013 | 11:48 PM
  #33  
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Re: 15'' rear wheel size for the drag race look

oh okay i see in your side walls the differance in height
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