I got 255/50/16's in the front. they rub the sidewall when i cut the wheel sharp. Is this going to become a problem? Should i bump down to 245? I like the tires though their Dunlop sport 5000's.
Also one more question the previous owner of the car (89 formula 350) had the camber way off so the tires were worn on one side. Along with the ****ed up camber the tie rods needed to be replaced to pass inspection. Would these be related? I'm guessin the previous owner beat on it when he drove it. Anyways I still love the car and would never get rid of a thirdgen.
Thanks

 

You should be OK. I test fitted 255's on my front, and they rubbed as much as the 235's that I have there now. Next time I buy tires, it will be 255's for the front.

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If you live in Southeastern US, check us out!
South East Thirdgen


ASE Master Tech + L1
Savannah, GA

'87 Trans Am
S/D TPI retrofit including functional PassKey, 22# injectors,
JET AFPR, Ported Plenum,
TB Coolant Bypass, Custom Cold Air,
SSM SFC, KYB Shocks, Boxed LCAs, Wonder Bar,
8mm Accel wires,
Flowmaster Exhaust,
16" GTA rims,
Corvette Servo,
-->14.97 @ 94.9 MPH<--

'97 Bonneville SSE

 

my friend has 255/50/16's on his 91 Formula. He hasn't mentioned any problems with them.
He put that size on so it would take away some of the wheel well gap. I have 245/50/16's on my 86 T/A and I just noticed today that my wheel rubs on my sway bar when I turn hard. I noticed this because I just painted my sway bar red and it is rubbing off in one spot, the spot where the wheel rubs.

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Zepher
'86 Pontiac Trans Am WS6, LG4 305, 5 Speed, CF DF Clutch,
Edelbrock 1406 Carb, Edelbrock Performer RPM 7101 Intake Manifold.
Edelbrock Open Element Air Cleaner: Flowmaster Exhaust, 160* Thermostat,
Grant GT Steering Wheel, MSD HEI Coil, Taylor 8mm Wires, Leather 96 Camaro SS Seats,
Alpine CD+Changer,Alpine V12 Amps, Premier TS-1040C Subs, Polk Audio highs/mids.
Best ET: 14.94@91.67
High Speed Run: 157mph
WS6 Trans Am

 

I can actually hear it rubbing, kinda freaks me out every time I make a sharp turn. I guess I'm just overly worried which is a good thing!!

 

I am now running 18X9.5 wheels with P275/35ZR18 tires on all corners. The tires only touch a little when the wheel is cranked at full lock. This is with Suspension Techniques springs...

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1989 Formula, 383", DFI, Mini-Ram, S-Trim Vortech, blah, blah...
Best ET: 10.796 @ 125.8 mph

TURBO 406 PROJECT STARTED!!!

Other expensive hobby: assault weapons/shooting sports

Employed at:
Hahn Racecraft
Accel EMIC/DFI Tuning
Turbosystems & Custom EFI

Member of Midwest F-Body Association
www.mfba.org

 

Hey GMI, how do you like your ST springs? I want to get some new springs and I have a book that says that they got an IROC-Z to pull 1.0 g's with only ST sport pack, consiting of springs, swaybars, and bushings, then some Bilstiens up front and adjustable Konis in the rear. I am comparing Intrax with ST right now. Any help would be apreciated.

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'82 Firebird, dead stock, 9 bolt disc rear, over 200,000 miles and still going strong, more to come...

 

Why would the 255 tires rub just as much as the 245 tires. Wouldn't the 255 tires rub more. I'm getting new tires pretty soon, so if I got 255 tires they would'nt rub anymore then the 245 tires? If I did get 255 it wouldn't fu^k anything up, would it? How would they look? Anybody have any pics of 255 tires on a TA compared to a TA with 245 tires, or any comments comparing the two?

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1988 GTA:
Crane Cam, K&N,
Flowmaster, Off Road Pipe.

 

Stingerssx: I have always liked Suspension Techniques products! Very high quality, and nice ride characteristics. The Eibach Pro-Kit springs are okay, but where I work I have seen different drop heights for identical cars using the same Eibach springs!

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Old: 1989 Formula, 383", DFI, built 700R4, TFS heads, Mini-Ram, Vortech S-trim 15 psi, 3.70 gears
Best ET: 10.796 @ 125.8 mph

New: 1989 T/A, 406", Accel Pro-Ram, DFI, AFR heads, HRC Turbosystem, NOS 150-hp dry kit, TH400 w/GV overdrive, 9" w/3.70 gears, 8-pt. S&W rollbar, 18" wheels
Best ET: Spring 2001

Employed at:
Hahn Racecraft
Accel EMIC/DFI Tuning
Turbosystems & Custom EFI

Member of Midwest F-Body Association
www.mfba.org

 

I had 245 60 R15's in mine and they rubbed bad when I made a full left or right turn. The sound it made was really loud. I went to 235 60 R15's and I have no probs now. I think they rub a little but not bad enough to notice. It also depends on how high the front sits and how strong are your springs. I just put brand new springs in mine and have no probs with the 235's now. You might be able to put in bigger with new springs.

 

I have 255/50/ZR16's on my 89 RS. It has IROC wheels, and it doesn't scrub at all. However, I used to have a set of 235/60/15's on Cragar 15X8 wheels on my 82 Z28 and they scrubbed terribly in both directions, so rims a lot to do with it, but if you have factory 16" wheels they shouldn't scrub.

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82 Z28 350, Ported #882 Heads, Performer RPM cam and intake, hedman headers,650 Demon carb,
Trans: Turbo 350 w/ 4000 stall -- Rearend 7.5 w/ Richmond 4.10's, Auburn Minispool
Best ET: 12.52@107.2
Future plans: Dart headed, Roller cammed 383 in early '01


89 RS, L03 305, Hypertech Chip,cat delete, Dynomax exhaust,K&N open element Filter,160 stat, MSD coil --Trans:700R4 Corvette Servo -- Rearend: 7.5 GM 3.42 w/ posi-lock
New Best ET: 15.03@92.7
http://www.bassettracing.cz28.com