Using Tirerack, the only possible tires even available for sale for the G's 18 inch wheels specifications are performance summer tires.

Does anyone have all season tires installed on their 18 inch wheels? According to Tirerack, it isn't possible.

Legend in Time

 

The problem is your choices are very limited in 225/45/18. An alternative is to use 245/40 in front instead - then Pilot Sport A/S and ContiExtremeContact would be available among others.

DG/G 6MT coupe, Borla exhaust, Stillen intake w/Z tube, H-Tech, Hotchkis Sways, 19" TE-37's

 

Yes, you cannot get the OEM tire sizes as replacements. There is no 225 A/S in the fronts. You're going to have to change some of your tire sizes to get the A/S's. There's a couple good threads in the Wheels forums about A/S's on the 18's to give you a better idea about it.

D. Graphite/Graphite | Premium | Splash | Clears | Pedals | 35% TINT | Z-Tube | 4080 Stealthbox - JL 10w3 | Escort 8500 | PIAA's

 

Thanks, I'll refer to the tire/wheel forum.

It looks like you all change the sidewall height of the tires. Does this affect the overall diameter of the wheel + tire?

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Legend in Time

 

I installed Falken FK451's and must say I am pretty impressed! Sizes are 245/40/18 front and 255/45/18 rears. These are GREAT in the wet, we have had down pours here in So Cal the past two days and the car is a champ to drive in the rain! The dry traction is quite good to and there is little screeching when driven really hard. For $620 a set, these are winners!

'03 G Coupe, 6 speed, Bose, Nav, Ivory Pearl / Graphite, 350Z airbox, more MODS to come!