Whats up guys i dont know if this is the right board but it does have to do with my wheel wells...i am thinkingf about buying 16" rims wit 245/50 on them. They are coming off of a Iroc Camaro...i have a SC so i dont know if the wheel well is the same...If you guys could tell me if they are the same or arent that would really help...i dont know if anybody put 16" rims on there SC but i havbe people telling me that it is gonna rub...right now i have 235/60/14 and i dont knoiw if they are stock...so you guys could be a big help right now by answering this puzzle of mine

Thanks

Chris

 

They should all be the same. All of our cars share basically the same front suspension componet types, IE we have all struts in the front and shocks out back. I have seen many SC's with IROC rims on them and have no problems. If your car is drastically lowered or "slammed" you may want to double check them on your car for rubbing before you buy them.

 

ok....i have a guy saying that just from looking at my car that it wont fit....i have the 14" rims on there now and i have room but it dont look like that much but i heard from 2 people that own camaros that they know it should fit....the thing is that the rims are in florida and i cant see them on my car before i buy them....i wish i could.....do you guys know how many inches it is to upgrade from 235 to 245....obviously it is 2 inches from 14" to 16" but how much is it on the tire....i wish the rims were here i dont want to have the problem of sending the back cause that probably wont be possible....these are rally nice rims and i really want them but if i cant use them there is no use

thanks

Chris

 

ttt

 

I agree with ChevyGuy! They'll fit. Here's how to figure out your measurments:

Sample Tire: P215/65r15

P=passenger
215 = section width
65 = aspect ratio
r = radial, can be sr or tr or zr (speed rating s/t/z/etc)
15 = rim height

Width of tire:
Section width divided by 25 gives you width in inches.
215 / 25 = 8.6" wide

Height:
1. Divide aspect ratio by 100.
2. Multiply that number times the section width above
3. This gives you "sidewall height".
4. Multiply the sidewall height by two (top and bottom sidewall).
5. Add the rim height

0.65 * 8.6 = 5.59"
5.59 * 2 = 11.18 "
11.18 + 15 = 26.18" TALL TIRE !


The quick calculator method is:

(width) / 25 * (aspect ratio) / 100 * 2 + (rim size)
215 / 25 * 65 / 100 * 2 + 15 = 26.18

Save yourself a step and convert the 65 to 0.65..

215 / 25 * 0.65 * 2 + 15 = 26.18

Now, undoubtedly, your current tires have bigger sidewalls than the tire you should use with these other rims. If all "goes well", your new tire/wheel combo will be the same height (if not VERY close) to your old tire/wheel combo. (Because, you can't use a tire for a 14" rim on a 16" rim, and vise-versa.)

Ex: 185/75r14 = 25.1 inches tall
Ex: 245/50r16 = 25.8 inches tall

Let us know how it goes!

 

WOW!!!....thanks....so do all that to the tires i have now and then take a 16" rim and see what matches up so i have the same amount of room as i do right now....so pretty much i am gonna need a low profile tire....the thing is this guy already has on 245/50/16 so those will be a tight squeeze...but he had them on his 87 IROC....i dunno i might just go for another set without tires it might be cheaper

Thanks

Chris

 

I have a 85 t/a that came with the 215 65 r15s. I put rims off of another t/a w 245 50 R16 on it. It fits fine. It does rub if I turn the wheel to far, because my cars wheel lock in the steering box is made for 15" rims. I just dont turn the wheel that far. I would have to turn it all the way to rub though. By the way, if you have 235s now, the width diff will be hardly noticable. When I went from 215 to 245 there was only around an inch.

Ben

 

Oh, and they were almost the exact same height.

 

but i am going from 14" to 16" and then 235 to 245 so its would be more than an inch or two it would be about three....it looks like it could fit but i dunno....they are coming from florida so i dont think i want to take a chance

 

You should only be 1-2 inches off on height. and hardly any on width. Your height will be 2 inches taller because of the rims, but you also have larger side walls. I would guess that the sidewalls would be around an inch different. That would give you 1" maybe 2 inches taller. They 235 to 245 will be under an inch different because my 245s were only about an inch wider than my 215s.

Ben

 

jesus... its not that hard people...

235(mm) * .6 ( aspect ratio ) = 141(mm)
* 2 cause there are 2 sidewalls In the height of your tire
141(mm) * 2 = 282(mm)

There are 25.3mm In one Inch.

282(mm)/253.)mm = 11.15 Inches of Sidewall

+ 14(in) In rim Size = a 25.1 inch tire. Pretty damn Close to stock Size.

Now, the wheels your getting....

245(mm) * .5 = 122.5(mm)
* 2 = 245 again, suprise suprise

245/25.3 = 9.7 inches
Add that to your 16" Rims

wow, another 25.6 inch tire, Whatddaya know

With the 245/50R16's you will be .5" Taller in Tire size than the one syou have Now. Thats negligable.


Will they Fit ? Of course. Our car;s are the same strucutrally from 82-92.

Iroc, SC, Berlinetta, TA or GTA, I don't care.. they will all interchange.


Just for funs sake, Im running 275/40R17

thats also a 25.6" Tire. Looks damn Good IMO.

Mine are Quite a bit wider than your 245's, and My car is lowerd 3-3.5"

So Your's will Fit For sure.

 

Aiight thanks for all your help...one more question i kno its stupid....but what does 245 mean is that the sidewall or how wide it is???....and same for 60 is that the width or the height of the sidewall????....i kno its stupid but i just want to get it straight

LOL

Thanks Alot Guys

Chris

 

245 is the width of the widest part of the tire, in Milimeters.

Not nessicarily the tread, as some tires have a signifigant bulge in the sidewall.

the "60" is the aspect ratio, What this means is that the Sidewall hiehgt is 60% of the width.

So you take the width, 245, and multiply it by .6, and you get your sidewall height.

This is only for one sidewall, Remmber that the tires height has Two.

You would be AMAZED how many people don't know this. It took me FOREVER to get a strait answer on how all this works.

Even people who worked at tire shops couldnt tell me how it worked... and its all So Simple.

 

You said you have 275's on the back of your car. How much room is left for clearance? I'm getting ready to buy new tires, and I'm not sure if I can squeeze a 295 back there. I have a 89 Formula. Also, do you know what the back spacing on your rim is?

 

I have 275's on all 4 Corners.

A 295 should fit fine, depending on Backspacing. Andres Skulte Is running 315's On the back of His IROC.

My Wheels are 4thgen Offset, I don't recall off the top of my head what the backspacing is, But they require a 1.25" Spacer In the rear and a 2.25" Spacer in the front to Look right, and to clear suspension componenets and the car's subframes.

The Tires in the rear Rub In hard Corners, But Only at the extreme of my car's handling abilites (23mm rear bar, Poly Bushings)

I always Mention, That my Car is lowerd More than your average 3rdgen ( 3-3.5") So Less drop than that would yeild less tire rub Issues.

I did use a sledgehammer To Clearance the rear inner fenders a bit however.