I'm going to purchase some 18" IROC rims(18x8.5 or 18x9) and was wondering if 245/40-18 or maybe 245/45-18 will rub in the front when turning? Any suggestions will be appreciated. Thanks

 

Um, not really sure about 18"rims but with my 15x7's the front tire rubbed ever so slightly with 265/50/R15's. If that helps at all.

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Eric Natzke
91 Firebird 305 TBI
"It Ain't Stock"
http://members.aol.com/j007golden/91firebird.html
For info on certain parts or mods go to the site below
http://members.aol.com/j007golden/modeval.html

 

Well, I have 17x9's in front with 275/40ZR17's and they do not rub at all.

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1991 Camaro RS, approximately 500hp 355, 11:1 compression, Eagle h-beam rods, forged steel crank, TRW lightweight 2 valve relief pistons, comp cams hydraulic roller, fully ported Dart Iron Eagle heads, Victor Jr., Holley 750, Hooker shorty headers w/3" collector, true dual 3" exhaust, Moroso spiral mufflers, T56 6-speed, Boyd Coddington 17x9, 17x11 wheels, 275/40zr17 fronts, 315/35zr17 rears, Cerillo racing seats w/ harnesses, Harwood cowl hood, 4:10 posi, Global West adjustable rear suspension and panhard bar, Hotchkis front and rear springs, 1LE sway bars, Koni shocks.

 

CarNDrvr: Was there any modification done to make them fit? I see you have springs, so I can assume the car is slightly lowered.
And what's the backspacing on the rim?

Reason I ask is I already have the rims, just haven't mounted them yet and just want to know if they'll fit without needing modification. If they do, where?

I mean I'm sure once I get the tires and mount the rims I'll see, but for now I'd just like to know.

The rims I got are 17" x 9" w/ 5" backspacing.

 

I also have a 5" backspacing. No mods needed to fit. Not in the front anyways. I needed to do some modifications in the rear for 17x11's.

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1991 Camaro RS, approximately 500hp 355, 11:1 compression, Eagle h-beam rods, forged steel crank, TRW lightweight 2 valve relief pistons, comp cams hydraulic roller, fully ported Dart Iron Eagle heads, Victor Jr., Holley 750, Hooker shorty headers w/3" collector, true dual 3" exhaust, Moroso spiral mufflers, T56 6-speed, Boyd Coddington 17x9, 17x11 wheels, 275/40zr17 fronts, 315/35zr17 rears, Cerillo racing seats w/ harnesses, Harwood cowl hood, 4:10 posi, Global West adjustable rear suspension and panhard bar, Hotchkis front and rear springs, 1LE sway bars, Koni shocks.

 

i've got 245/50 ZR 16 's and they have never rubbed. CC ran an article on building 82-92 f-bodys and had a wheel section with all of the measurments required to make them fit with just spacers(for the 275's up front)umm if you've lowered the car you may have problems rubbing the top of the fender well going over bumps with that sidewall and tire size, otherwise your 245's shouldnt rub going into corners

 

hey dude-
i ghave 18" irocs with 245/40s all around with no problems rubbing, and lowered 1". only rub in the back with hard cornering and a car full of people. hope that helps.

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91 Z28, 64k mi.,k+ns, chip, flows, fresh black paint, gts blackouts all around, 18" chrome irocs, kybs, eiback 1" springs, global west sfcs, nu stereo/sub/amp, red dome/guage lights, and plenty more to come.

 

hey FTC, this would help alot but you can help me out even more if you had some pics. of those chrome irocs and post them. thanks and I appreciated.