livefast88

I have a 93 firebird and im looking into purchasing a wheel and tire package from jegs 15x4fronts and 15x8 rears is there gonna be any fitment issues?

livefast88

Any help would be appreciated

NewOrleansLT1

Just run 5/16" spacers with conical shank lugs and you should be set. Make sure you get the proper backspace too..

duh

iTrader: (16)

With my fronts, I run a 1/4" spacer and stock lugs. I'm pretty sure mine are the Summit Stars (basically the same thing) though. I also have 3" studs just to make sure there are no issues with the studs.

livefast88

The 15x4 are 1.75" backspacing
15x8 is 4.50" . Really dont want to run spacers unless i have to 😒. Ive.heard of.people grinding the.calipers some if i do that will i still need spacers?

duh

iTrader: (16)

I run spacers due to ls1 front brakes. I never even tried to bolt them up to lt1 brakes. I apologize for forgetting to mention that.

livefast88

Thanks for the help guys.ran me almost 1400 from jegs hoping they are worth it.pics up soon

NewOrleansLT1

You should have gotten 5.5" BS for the rear. Your going to need rear spacers now with the 4.5" BS you ordered..

livefast88

Neworleanslt1 test fitted them they stuck out so far gonna call jegs and exchange them for the 5.5" backspacing. The rear tires i got are mickey thompson et street radial size 275/60r15 they almost look to big to fit in the rear fenderwall does anyone else run this.size.tire on a 93?

guppymech

iTrader: (7)

^^^ Those tires are 28" dia, what are your goals for this tire/wheel setup? Going racing or just looking badass on the street? What trans and rear end gears do you have? This info is important when determining what diameter tire to run for best performance.

livefast88

Basically just a weekend car to beat up on the young punks around my area.not sure on the rear gear size. Im just.wanting to no if they will fit in the wheel well?

livefast88

My car is.not lowered or anything.tire looks like it goes on a truck.

duh

iTrader: (16)

I would go with a 275/50 15 tire. I run the same size but a 10" wide wheel with 7.5" BS. It's the same diameter as stock (more or less) and works great with a 3.23-3.73 gear. So if the rearend is still stock you're ok with stock diameter tires.

livefast88

Has a 3.73 rear gear

duh

iTrader: (16)

I would still suggest the 275/50. The 275/60 is a 28" tire that balloons under acceleration. This will cause slight rubbing, usually around the back if the wheel well on the bumper cover. The 26" tire doesn't grow enough to cause problems and will give a bit better acceleration down the 1/4 mile. The 28" is good for bringing up the mph tho. I too thought about going to a 28" tire, but I don't feel like clearencing the body to keep my et the same with a bit more mph. I like my 12.9's at 103 before the gear swap. Once the snow melts I should be right around 12.7's at the same mph. Unless you want to put 4.11's in the rear I would stick to a 275/50.