ok i just got my corvette rims on ebay, 99 vette with 17's and 18's...i already installed the 4th gen rear...so should i get a pair of 2" spacers for the front or 2.25"????? also will i still need to space the rear rims out a little as well? what are other people running with my set-up... i figured the small spacers that are in pepboys would be ok for the rear because i heard others saying they still had to beat the inner wheel well in with a hammer when running 4th gen rims+rear on a 3rd gen. thanks in advance everyone.

 

I'm running a 4thgen rear with 9.5" C5 wheel and 275 tire with no spacers in the back, they aren't necessary beacuse the 4thgen rear is about 3-4" wider than the thirdgen rear. Maybe with a 10" wheel and huge 315's it might require some work, but I'm not sure on that. Also I have 2" adapters in the front. Some run 1.75 some run 2.25 I guess it's a matter of preference, but 1/4" isn't going to make any huge difference.

 

i have y2k wheels.. same thing i think.. 18 x 9.5 and 17x8.5..295/35/18 in the back

1.5" looks like **** on the front with ls1 brakes., i need another .5 or .75 more ... go with 2" and you can always add a shim if you want more.. make sure to get hardened studs for the front..arp.. cheap insurance

rears.. i cut my bumpstop off.. before i put the spacer on.. i got longer studs and used a .5" spacer.. this is with a 99Ls1 rear which is a little narrower... lt1 you could probably get by with shaving the bumpstop and using a small spacer or none at all with 275s... you will have to massage the inner rear well.. but it doenst take much to do

 

thanks guys ill get 2" for the front....yes they are 275/35. i actually bought 2 sets of corvette rims, gold magnesium 5 stars and the regular vette 99' 5 star.mabye selling a set. nice bird bro!

 

If you want, I just did my upgrade to the 4thgen rear recently but I've had the vette wheels for a while now so I have two 2" billet aluminum adapters w/ lugs from SPD ( Skulte Performance Design).. I paid 150 for them and will sell them for $100+sh if you want to save some cash on buying new ones.. Although there are cheaper ones on the market than these.

 

just won auction for 2 2" adapters for 75.00 with shipping...thanks tho

 

Nice, good luck!

 

I'd use some kind of spacer for the rears. I have stock 275/40R18 tires on 18x9.5 wide-spoke vette wheels (like what you won on eBay). I had to beat the inside of the fenders pretty good, and they still rub when making quick sharp turns. I think another 1/4-1/2" would fix the problem. I'm going to try the stock 1/4" spacers that came on some of these cars from the factory if I can find a pair.

Most people say to use 2" to 2.25" spacers front and rear on a stock car, and the LS1 4th gen rearend I have is 1 5/8" wider on each side, roughly.