sc430scruz

I’m thinking of going to a 17” wheel on my 2002 SC430 in order to get a smoother ride. Just replaced struts/shocks about 10k ago, so I’m not going to do coil-overs….rear bushings are ok as it was manufactured after the upgrade.
Been running (Michelin Pilot Sport A/S3-non runflats), but would still like a softer and quieter tire.

Anybody got experience going to a 17”? I’m looking to add some sidewall height for more compliance. The 245/45/17 is a match in outer dimensions, but only adds .4” of extra sidewall….don’t know if that will make a big enough difference in ride.
A 50 series would give more sidewall height (+.9”), but it would also be taller (+.9). The added height of a 50 series concerns me because of “jounce” while the front wheels are turned….don’t want to hit the fender edges.
So, has anyone tried a 50 series tire? Will it hit... will it fit when turned? What size is best? Brand?

Thanks all.

Below are some tire stats:

245/40/18
diam 25.7”
sidwall 3.9"

245/45/17
diam 25.7"
sidewall 4.3" (+.4")

245/50/17
diam 26.6"
sidewall 4.8 (+.9”)

DshngDaryl

Go to tires.com and put in your car. It lets you see tires 2 sizes smaller and 3 sizes bigger.

Here are 17 inch tires that will fit your car. The warning means you need to get new rims; you can't use your 18 inch rims



If you wanted the biggest sidewall, my guess 255/45 or 235/50 would be the winner

Caflashbob