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changing from 15' to 16' rims

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Old Oct 23, 2001 | 03:32 PM
  #1  
Bill Krumel's Avatar
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From: Nebraska
changing from 15' to 16' rims

I am considering buying 16 inch 91-92 rims
for my 89 RS. I currently have 15 inch
stock rims on the car. By switching to
16" rims will this throw my speedometer off?
How much?? Is there a way to fix this??

THANKS FOR ANY HELP IN ADVANCE!


------------------
1989 Camaro RS
305 TBI
Gunmetal Metalic Paint
Grey Interior
4th Gen Seats
145mph Speedo
Kenwood eXcelon head unit
eXcelon front and rear speakers
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Old Oct 23, 2001 | 03:55 PM
  #2  
Zepher's Avatar
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
When you get tires for the 16" wheels get this size, 245/50/16. there should be no problems with speedo.

------------------

WS6 Trans Am.

View My Ride @ thirdgen.org
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Old Oct 25, 2001 | 10:05 PM
  #3  
Bill Krumel's Avatar
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From: Nebraska
Anyone else have some input for me??

THANKS!
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Old Oct 25, 2001 | 10:52 PM
  #4  
ChillPhatCat's Avatar
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From: LaFayette, NY
Car: '10 Subaru Forester
Engine: 2.5 Boxer
Transmission: 4EAT
Axle/Gears: 4.44
I agree with zepher... thats the stock size for 16x8 wheels, and my calculations say it will only throw the speedo off by a couple MPH at 100.
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Old Oct 25, 2001 | 11:41 PM
  #5  
deadbird's Avatar
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From: So.west IN
Car: 87 Formula/ 00 Xtreme
Engine: TPI 305/ v6
Transmission: struggling t-5/ 4l60E
Axle/Gears: 3.08/ 3.23
My camaro came riding on hefty 215/70-14's

Upgrading to 245/50-16's (same height) changed nothing on the speedo (verified by one of those speed survey things on the side of the highway)

225/60-15's are also the same height.

Sizes will vary slightly from tire manu. to tire manu.,,, nothing to lose sleep over though. I had 255/50-16 on the back of my camaro & the speedo was slow by 2mph@50.

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"Always do sober what you said you'd do drunk. That will teach
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Old Oct 26, 2001 | 12:21 AM
  #6  
Bill Krumel's Avatar
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From: Nebraska
Thanks guys. I kinda figured if you kept the height the same that it should screw the speedo up to much. My dad keeps bitching at me that my ride is gonna suck if I go to 17's... Is this true that the ride is alot worse?
If you had the choice between BRAND NEW 91-92 16" rims and ROH Snyper 17" rims which would you take? I can get the 91-92 rims for 675.00 and they are brand new. Where as the 17" ROH Snypers would be 800.00 atleast plus tires will cost more... Is the extra money for the inch bigger really worth it???
Tell me what you would do...

THANKS!

------------------
1989 Camaro RS
305 TBI
Gunmetal Metalic Paint
Grey Interior
4th Gen Seats
145mph Speedo
Kenwood eXcelon head unit
eXcelon front and rear speakers
Reply
Old Oct 26, 2001 | 11:36 AM
  #7  
CODY BEHNKE's Avatar
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From: NEBRASKA
Just remember if you are running rear drums to put factory wheel spacers on, or you will have the wrong offset.
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Old Oct 26, 2001 | 01:18 PM
  #8  
okfoz's Avatar
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From: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
215/60R16 & 235/55R16 tires were also used on some of our cars. But I don't think they ever looked right with the 16" rim. the tread was too narrow.

John

------------------
G O D BLESS AMERICA
87 Formula Yellow/Black

5.1 TPI Automatic
Baer 12" brakes 4 wheels, KYB AGX Adjustable Shocks & struts, Custom Leather interior, WAAAY TOO MANY MODS TO LIST

87 Formula TPI (5 Speed) Yellow/Gray STOCK

1967 Buick Riviera 430hp Turns high 14's (Not bad for 4300 lbs)

83 Camaro
83 T/A

http://www.3rdgenformula.com

[This message has been edited by okfoz (edited October 26, 2001).]
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Old Oct 27, 2001 | 03:53 PM
  #9  
SlowCamaro88SC's Avatar
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I've never seen 215/60-16 used ever.
the only factory 215 series tire was the 215/65-R15

stock sizes were
195/75-R14
215/65-R15
235/60-VR15
235/55-R16
245/50-VR16
245/50-ZR16

though I've seen 205/75-R14 and the guy swore it was stock, and I think the 205's were offered on '85 maro's and in '86 they started to use 15's and no 14" wheels

I have seen 225/60-R16's on f-bodies, but they looked a bit weird, but the speedo was on. Kinda how a mid 90's Grand Prix SE came with a 225/60-R16, but a GTP could be had with a 245/50-VR16 -- on the same crosslace 16x8's nonetheless. (only 16x8 used on a FWD car)
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