vette rims

[bigtow]

hi guys and gals i have just purchased a set of zr1 rims they are fitted with 245 45 17 on two of them and 245 40 17 on the other two will they fit my 93 formula and will i need to get the speedo reset if so how do i go about this also what lug nuts will i need thanks in advance

[PUREPWR]

No i dpnt think you will have to because with the lower profile tire and a bigger rims size equals out to a smaller rims with a bigger profile. A way to check this is that you put a chalk line on the tire and sidewalk then do a complete revolution with the tire and measure the distance from start to finish. Do this with both the 17inch wheels and the set of 16inch wheels. obviously with the tires on them. hope this helps. otherwise you will have to get a hypertech for around $330.

[Injuneer]

What were the stock tires on your car?

If they were 245/50-16, they are virtually identical in diameter to the 275/40-17's you are putting on the back, and no correction of the speedo is required.

If you started with 235/55-16's as stock tires, you will need to make a small adjustment.

By the way, there is no Hypertech for the 93's. There are other ways to adjust for the wheel diameter change, if required.

[bigtow]

thanks

thank you for the advice. but what about the lug nuts?

[PUREPWR]

Well the about the lug nuts, you should get the chrome lug nuts if the wheels are chrome but if they arent you should just reuse the ones from the previous set. Only buy locking lugs though. You can buy them are autozone or any other auto super stores. Im not sure on teh size, but im sure that if you tell the person at the store what kinda car you have they could tell you the size lug u need. And remember if your wheels are chrome to retighten the lugs after about 20 or 30 miles because chome lugs slip easier. And dont use an impact gun on chrome it will strip the chrome off the lug.