Comparison graph of various GT-S tire sizes

[vvtlikick]

I calculated the dimensions of most/all the common GT-S tire choices, and compared them to stock.

Some people might find this graph useful.

http://www.newcelica.org/photopost/data/500/4865gts_tires.png

[Automaton]

Werd. Now people can have something to look at instead of just proclaiming the cheapo wheel-and-tire deal combo that they got for $600 is "teH Best W0n!@#"

Actual calculations is the reason I will ONLY go with 225/40/17 if I upgrade my wheels/tires from the stock 16's.

[vvtlikick]

But almost no tires are made in 225/40-17 :(

As for sizing, I wouldn't worry at all about a small difference (<1.5%). Tire wear alone can make that much difference.

[bullet1]

Nice chart. I put 225/40/18's on my GT-S and noticed a huge difference in both gearing and speed. Nearly impossible to stay in lift with these things and they slow the car down something fierce. Time to get some lightweight 17's.

[Automaton]

I only know of the Nitto 555's that come in 225/40/17. I hear they are a decent summer tire. Not perfect for hardcore autocross or anything, but supposedly better than stock and not too expensive.

Know of any other 225/40/17 tires other than Nitto 555?

[vvtlikick]

Originally posted by Automaton
...
Know of any other 225/40/17 tires other than Nitto 555? Nope. :)

If I had 17" wheels, I'd probably choose a tire first and then see if was available in a decent matching size (like 215/40-17 or 205/45-17).