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Well hello everyone I just bought my ISF a month ago from this forums. When I took delivery of the car it had super bald front tires so I replaced them with the stock 225's before I realized a wider tire would have been a better option. With that being said within the next month or so I need some rears would I be wrong to put a 275 on the rear instead of a 255? I did try and Find this topic with the search with no luck. On a side not I'm in love with this car and I hope to see some of you guys at a meet 1 day.
A good number of members have upsized their tires to 245/275 with little to no trouble. You will be happy with the added grip, especially in the rear. I know a few members who have chosen 285 in the rear with the stock wheels, and while there are no measurements or performance tests proving its benefit, it does fit and still provide added tread out back.
Where in CA are you? I'm definitely looking forward to setting up more SoCal IS F events for the community.
A good number of members have upsized their tires to 245/275 with little to no trouble. You will be happy with the added grip, especially in the rear. I know a few members who have chosen 285 in the rear with the stock wheels, and while there are no measurements or performance tests proving its benefit, it does fit and still provide added tread out back.
Where in CA are you? I'm definitely looking forward to setting up more SoCal IS F events for the community.
What I meant actually was would it be wish to widen the rears with my 225's on the front? There brand new with only 500 miles on then and with a baby on the way in less than 3 weeks buying another set of fronts is out of the question. Also I live in Palmdale CA. But I have a place in redondo beach also so I'm down there a lot also.
What I meant actually was would it be wish to widen the rears with my 225's on the front? There brand new with only 500 miles on then and with a baby on the way in less than 3 weeks buying another set of fronts is out of the question. Also I live in Palmdale CA. But I have a place in redondo beach also so I'm down there a lot also.
I can attest that running the OEM sized rear tires up front provides excellent grip. I currently have 255 Michelin PSS in front & I love them. However, I have the '12 wheels, which are wider. I'm not sure how well it would work with the earlier wheels.
I had the same dilemma a month ago. I needed to change out my rears but my fronts were in good shape. I decided to install the stock 255 in the rears. Logically, I thought the 225/275 combo was a no, no. All this with the intention of allowing the fronts to wear down. When they do, I will swap the rears to the front and purchase 275 for the rears like I originally wanted. Hopefully, this is another option for you to consider.
a 275/225 combo will exacerbate the understeer already present in the ISF. My advice is DON'T DO IT!
Either stay as you are, or try and sell your front tires. It it were me, and it was, on stock wheels I would run a 285/30/19 and 245/35/19 combo. that way you keep the front and rear ODs the same as Lexus intended on the ISF. When I had stock wheels I ran Bridgestone S-04s. It's a great reasonably priced Max Performance summer tire:
I had the same dilemma a month ago. I needed to change out my rears but my fronts were in good shape. I decided to install the stock 255 in the rears. Logically, I thought the 225/275 combo was a no, no. All this with the intention of allowing the fronts to wear down. When they do, I will swap the rears to the front and purchase 275 for the rears like I originally wanted. Hopefully, this is another option for you to consider.
That's exactly what I think I'm going to do it makes sense, also I don't really like the new fronts that I purchased they were a quick inexpensive option 220$ for new kuhmos installed. Thank you guys once again for all the help.
Some prefer added sidewall. It also depends on road environment. Granted most roads are pretty smooth in CA, but there have been members who wanted a 275/35 just because of potholes, rocky roads, dips, etc. The spec isn't in keepng with what's stock when determining upsizing tires, but then again some just choose not to want something that's within spec.
01-04-16, 10:16 PM
Just a simple tire question.
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