I have a 1991 camaro RS, with 16 inch rims and 225/60-16 tires. I plan on getting the 18 inch chrone iroc wheels from performance wheel outlet, with comp t/a 245/40-18 tires. The hight and diameter are exaclly the same, so no problems with spedometer being off and up/down movement. But with the 245 with on a 18 inch tire clear my wheelwell. Has anybody tried this size? Will it work?

 

well, first the diameters are not exactly the same, the 18 inch tire, when mounted, is .46 inches shorter per sidewall than the 16 inch tire. whether that will compensate for the extra 20 mm width of the tread, which is .8 inches wider, i couldnt say, but a 245 tire fits under my wheelwell, so i would say go for it. as for the difference in wheel height, it will most definitely affect your speedometer. assuming an auto with 3.08 gears, at 2400 rpm the 16 inch tire will be trvelling 81.13 mph, the 18 inchers will only be pulling 78.7 mph, a 2 plus mph difference, but enough to get you a ticket.

 

Jawz,
Check out my pictures on;
https://www.thirdgen.org/rides/index...ew&rideid=4262
Ive got 265/40x18" which fit with no problem
cheers
PM

 

hey powermite, when I went back to look for your old post, you pictures didn't work anymore. You have big pics to show us?

check out a guy on 18s in my club:

"Speedline Allisio 18x8.5 front
Speedline Allisio 18x10.0 rear
Dunlop SP9000 245/40/18 front
Dunlop SP 9000 275/40/18 rear"

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-Tas
'89 Formula WS-6

305, TBI, 700R4, P.A.W. 14x3 open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips, Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248)
Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options

 

simply stunning...........those are some clean 18's. has anyone ever slammed a camaro on duce-duces?

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1987 LG4 Camaro z28
Mods- 80 series flowmaster, k&n filtercharger, open air element, high flow cat, 180* stat, edelbrock performer intake, msd blaster coil, ascd big block hood, panasonic cd player, rockford everything else.

 

Hey jawzforlife,

Did you possibly make a typo and mean to say that your tires on the car now are 245/60/16? I thought all 16" stock tires on 89-92 Camaros were that size.

If so, then you will be fine as far as fit. About the only thing you would have to worry about is the offset, back spacing, wheel width, you know, the usual stuff. That all comes into play when your talking about clearance issues.


AJ

 

Hey,

Did that guy with the red camaro have to do any cutting or other adjustments to fit that 18" tire?

Thanx

 

he might have pounded the inner fender a bit


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-Tas
'89 Formula WS-6

305, TBI, 700R4, P.A.W. 14x3 open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips, Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248)
Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options

 

hey guys ,
Sorry some of my pics arent working.
Hopefully though the readers rides are
https://www.thirdgen.org/rides/index...ew&rideid=4262

cheers
pm

[This message has been edited by powermite (edited November 25, 2001).]