Is there really any difference (17s vs. 18s)...

[gtoN8]

I'm trying to get a set of stock 18s only because I really like the look of them opposed to my stock 17s. Now, I have a coupe questions about switching:

1. Do I have to get an alignment just from switching?
2. Do I have to get my speedo recalibrated?
3. Is there really any difference in straight line acceleration? 18?=slower than 17s?

Hopefully, you all can set me straight on those things.

-Nate

[elmn8r]

1. No, but you should anyway.
2. No.
3. If you're just strictly talking about stock 17" vs. stock 18", then no.

[OpenWheel]

I'm trying to get a set of stock 18s only because I really like the look of them opposed to my stock 17s. Now, I have a coupe questions about switching:

1. Do I have to get an alignment just from switching?
2. Do I have to get my speedo recalibrated?
3. Is there really any difference in straight line acceleration? 18?=slower than 17s?

Hopefully, you all can set me straight on those things.

-Nate
1. Always get an alignment when you get new tires. They will last longer.
2. No, but some people that have the software do. I do. The difference will be minimal, depending on tire diameter.
3. The stock 17s hook better for me. I have 2 GTOs 1 with 18s and the other with 17s. The 18s are MUCH better in the twisties. THe 17s hook better. The 17s are a better ride. All IMO of course.