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11-15-2012, 05:43 PM
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#1
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Regular Member
Join Date: Sep 2012
Location: Lemoore California
Posts: 25
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Tire Size Help
I just bought some 17x9.5 and 18x10.5 zo6 replica rims, and i was wondering what tire sizes i should get. I have a 1994 Firebird Formula. Thanks!
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11-15-2012, 06:01 PM
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#2
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Regular Member
Join Date: May 2012
Posts: 3
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2755017 for the front not sure what the aspect for the 18 but the 315 is what i have on mine o the rear
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11-16-2012, 08:16 AM
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#3
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Runs with scissors
Join Date: Feb 2009
Location: Ft. Worth, TX
Posts: 3,286
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275/40-17 is the stock 17" size for 4th gens. I have ran 255/40-17 up front also.
Stock diameter is 25.7". Just go on tirerack and see what 18's come in a similar diameter with a width similar to your rear wheels.
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Just two slow 4 doors.
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11-21-2012, 08:57 AM
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#4
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Regular Member
Join Date: Nov 2012
Posts: 7
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265 35 18 front, and 285 35 18 rear for no rubbing, I was a tire/wheel tech for 7 years and thats what your supposed to run. you can get away with a 295 or 305 35 in the back but the front you gotta be careful. 255 35 18 if you can find em, but you got 9.5 inch wide wheels so you might be stuck with using a 265 or probably a 275 35 18 front and 295 35 18 rear. 305mm's in the back might rub
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99 Z28 M6
Blk/Gry lea. SS clone, SS hood, 10 spoke 17's, R.S. gear built Tranzilla T-56, Hays clutch, SLP Flopac CAI, SLP Loudmouth, Bmr LCA's, UMI APHR, Anzo Halo's, Hurst Billit Short throw.
79 Z28 355/Th400
"1/4 mile at a time, thats just fine"
nitrous till it pukes
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11-27-2012, 11:24 PM
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#5
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Regular Member
Join Date: Feb 2011
Location: town 300 strong in Colorado
Posts: 94
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I have 285's on the back and they rub accelerating around tight corners.
Sent from my Autoguide iPhone app
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95 T/A T Top Red Moroso,,Trickflow,,MSD,,Flowmaster,,Nitto,,OE Creations,, Manley valves,, Patriot gold extreme springs,,lunati cam,, LE2 heads,, Infinity Kappa component audio,, Kenwood amps,, Alpine deck.. More to come  .................................................. .....
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11-27-2012, 11:25 PM
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#6
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Regular Member
Join Date: Feb 2011
Location: town 300 strong in Colorado
Posts: 94
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Just FYI. I have a 95 trans am.
Sent from my Autoguide iPhone app
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95 T/A T Top Red Moroso,,Trickflow,,MSD,,Flowmaster,,Nitto,,OE Creations,, Manley valves,, Patriot gold extreme springs,,lunati cam,, LE2 heads,, Infinity Kappa component audio,, Kenwood amps,, Alpine deck.. More to come .................................................. .....
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11-28-2012, 10:39 AM
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#7
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Regular Member
Join Date: Mar 2008
Location: Atlanta, GA
Posts: 1,056
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Casy, where are they rubbing, inner wheel well or fender lip ? R U lowered ?? . I'm running 315/35-17's w/10.5 inch American Racing TTm's on the rear. Had to do the BFH mod and bang in about 1/2 inch of wheel well between 9:00 and 12:00 position. Also grind jounce stop bracket so it did not hit the wheel rim when jacking up by frame. I am not lowered and don't have adjustable pan hard bar. My rear is about 3/4 inch off center, left tire extends about 1/2 inch beyond fender lip and right is about 1/4 inside fender. I have about 3 inches of clearance from top of tire to fender, so I added spacer in stop bumpers to prevent tire from touching fender in abnormal conditions. Never actually felt it hitting the stops, but I don't jump off ramps with this car..
[IMG]  [/IMG]
[IMG]  [/IMG]
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I'm Bob.. 1994 Z28, A4, Stall, CAI, Cam, RR's, 342 rear, LT's , CatBack, Tuned
Last edited by bobdec; 11-28-2012 at 04:46 PM.
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11-28-2012, 01:44 PM
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#8
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Regular Member
Join Date: Sep 2010
Location: Wisconsin
Posts: 743
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[QUOTE=bobdec;471812]
[IMG] [/IMG]
I didn't read hardly anything in this post, but I can tell you this picture caught my attention. I love the tires and exhaust tips 
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95 Trans Am A4, factory 3.23s, Ram air, Phab catback, shift kit, BMR front and rear sway bars, Lakewood LCA's, UMI subframe connectors, Random Tech TA, Founder's Performance strut tower brace and PHR
99 Saturn sl2 M5, 92 header-daily driver
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11-28-2012, 02:26 PM
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#9
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Regular Member
Join Date: Feb 2011
Location: town 300 strong in Colorado
Posts: 94
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Myn rubs the inside wheel well, it's only around hard corners though. it was like this when I got it but it does seem lower then normal t/a's to me. Nice car btw.
Sent from my Autoguide iPhone app
__________________
95 T/A T Top Red Moroso,,Trickflow,,MSD,,Flowmaster,,Nitto,,OE Creations,, Manley valves,, Patriot gold extreme springs,,lunati cam,, LE2 heads,, Infinity Kappa component audio,, Kenwood amps,, Alpine deck.. More to come .................................................. .....
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11-28-2012, 04:45 PM
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#10
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Regular Member
Join Date: Mar 2008
Location: Atlanta, GA
Posts: 1,056
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Thanks, Cat Back is Corsa Corsa Performance Exhaust - CORSA Products Tires are Sumitomo 275/40-17 front 315/35-17 rear . Wheels are American Racing TTM 17X9 front and 17X10.5 rear
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I'm Bob.. 1994 Z28, A4, Stall, CAI, Cam, RR's, 342 rear, LT's , CatBack, Tuned
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