Yes

I'm about to put new wheels on my SC430. 8.5x20+25 in front and 9.5x20+25 rear.

Another member had recommended 235/35/20 & 275/30/20 tire sizes. He said that mathematically that's a better match than if I ran 245/35/20 in the front.

Unfortunately, the tires I want (Continental DWS) only come in 245/35/20 in the front. All season tires would be a big plus since I get a little bit of snow here and this is my only car.

Will it cause any issues to run 245/35/20 in the front with 275/30/20 in the rear?

mitsuguy

iTrader: (2)

275/30-20 nominal diameter = 26.5"
245/35-20 nominal diameter = 26.8"
235/35-20 nominal diameter = 26.5"

so, while that recommendation was correct, you will probably not be able to notice the .15" per sidewall in height difference...

zig@tr

The tire sizes you have chosen are close enough in height to be a good staggered fitment. However, my concern is the vehicle came with a 25.7" tall tire in a 245mm width from the factory, now you're going to 26.8" (front) / 26.6" (rear) tall and will also be making the tire wider in the rear. It would be very close and large bumps or turning full lock-to-lock may cause some rubbing issues. So, there is a very good possibility for needing a fender lip roll or reshaping the inner fender liners.

Yes

Thanks for the replies. I am worried about rubbing in the front. I had a set of wheels before in the same sizes with more conservative offsets (8.5x20+35 / 9.5x20+35). I had 235/35/20 in the front originally with no rubbing.

When I replaced my tires, I ordered the same size and had some rubbing on the front liners going over bumps, which I was fine with since it didn't get into the fender. I assumed it was rubbing because the new tires had more tread. Then later I realized they put the wrong size on (245/35/20). The more I think about it, I'm worried with the more aggressive offset it will get into the fender.

If that's the case, I may just go with the summer tires and get a set of winter tires to put on my stock wheels for winter. But we only get about 5 days of snow here, so that's a little excessive.


Also, here's a shot I took with my old wheels (8.5x20+35) with 235/35/20.

zig@tr

I would agree it seems like a bit of a waste to have winter tires for that little time. I would play around with sizes you would like to run and see if you can find an all-season that will work or just park the car for those 5 days a year. I know there is a Michelin Pilot Sport A/S+ you could run 245/30R20 front and 255/30R20 rear and use your existing wheels?

Michelin Pilot Sport A/S+

Yes

I was looking at the Continental DWS. The rears should be fine with 275. It's the fronts that I'm worried about rubbing the fender.

It doesn't look like anyone makes a good all season tire in 235. Hankook makes one, but it got very poor reviews for snow and ice, so it's probably not any better than a summer tire.