I recently acquired a set of IS F Sport Rims (18x8, 18x8.5) and want to put them on my ES300h. How do I figure out what tires to use to maintain the front diameter. Any help would be greatly appreciated.

 

I thought ISF's came with 19" rims.

Are you trying to maintain the same diameter as the stock setup?

John

 

If they are 18". 225/45/18. If they are 19" 225/40/19.
If you want a little more meat in the rear and since the wheels are staggered, you could do a 235 in the back.

 

Here is a handy calculator.

http://www.miata.net/garage/tirecalc.html

 

The F-Sport rims are 18 inch. But running a staggered setup on a FWD car doesn't really cut it. But since you already purchased, I would run 225/45R18 up front and 235/45R18 rear.

 

That calculator is really handy. Thanks. Yes. I am trying to maintain the same diameter up front while maintaining a subtle stagger out back. I settled on a 235/45/18 up front and a 255/45/18 out back. Now if only Coscto will mount them.

 

Posts pics when you are done.

 

BTW The FWD Impala SS (5.3 V8) ran equal size tires F/R but the platform cousin Grand Prix GTP had a staggered fitment...with the larger in the front!

 

Found this Calculator on a Tacoma site and wanted to share it with you all.

http://www.rimsntires.com/tireplussi...biddiameter=17

 

Thanks all. I went with a 235/45/18 front (same diameter as stock 215/55/17) and 255/45/18 rears, just a 19mm larger diameter rear, but an inch wider. Got my F Sport badges on my fenders and I'm good to go. Maybe now Lexus will put out an ES F Sport.

[IMG]/IMG]

 

Please post pics!

 

That looks great! I might just have to get me some of those. Can anybody do a photoshop of his car with it in matador red instead?

 

How's the ride compared to the stock wheels and tires?

 

And the MPG change

 

The ride compared to stock is excellent. Better road feel and not to much "buick" release in the wheel, The MPG change, however has been three miles. Exactly. I was getting 36.x (low) with the stick tires and 33.x (low) with the wider tires. Now if I can only get the other drivers of the car to stop hitting curbs. The wheels need to be touched up with paint shop quality paint.

Highly worth it, never got a second look with the stockers. Novw everywhere I go, I get compliments.