dkaplan435

I tried the IS350 wheels on my car and none of them fit. That's why I purchased new wheels. The clearance wasn't enough.

caymandive

iTrader: (2)

The OEM split spoke 18" wheels from the rear of the IS350 do fit the IS-F, but you are right that the front OEM IS350 wheels won't fit due to clearance issues.

caymandive

iTrader: (2)

According to tire rack the 235/35/19 tires fit on rim sizes 8-9.5". The front wheels are 8" so there shouldn't be any problem. Maybe if the car was lowered or something then maybe there would be a slight rub on full turns.

Cheezypoof

Rubbing during hard-over turns is my primary concern with running 235s up front. I'm looking at 2 options:

1) get an 18" 225 winter setup and hope whatever wheels I choose have enough clearance for the F brakes. I've narrowed it down to a couple of different wheels running Dunlop Wintersport M3s (great winter tire).

2) Goodyear 19" all seasons with 235s up front

Neither are a lock to work (perfectly) and unfortunately there's only one way to find out. I'll be rolling the dice over the next week but don't plan on having the dealer fit them until early December, so no feedback until then...

caymandive

iTrader: (2)

There is another potential option. Toyo Proxy 4 tires for about the same price as the Goodyears, but the rear would have to be bumped up in size as well. If there is no issue with rubbing in the front with the 235's it would be nice to slightly widen the rear tires with the 265s. Doing calculations it would only be 3/10s of an inch larger in diameter.
235/35/19 Front
265/30/19 Rear

TherealFIG

but consider that the OEM wheels are 2K a pop up front and $2500 for the rears....I think the snow+rims is worth it. Just from the standpoint of curbing a rim will force you to buy a whole new set anyway for the money.
$1500 for my set of winter wheels and tires, not too bad.
Fig

BigMikeISF

Good point! Should something happen, you save yourself some money by putting on winter's I'm so glad I don't have to worry about winter wheels and tires

Smellinor

I am also having a tough time to find a local shop in Vancouver, BC that will guarantee me any 18" wheel will clear the brakes on the IS-F. Most of them are saying the car is too new for us to commit to that.

I did go to the Lexus parts counter and they did say that they had a 18" wheel from the IS350 that would fit but I don't know if I can believe that.

I also want to go with a similar staggered setup with 225/45/18 for the fronts and 255/40/18 for the rears.

Looks like I will go for the TRMotorsport MT1 Matte Grey from Tirerack.com if I can't find a local guy to help me out.

Hope to hear some of you other guys with more options for me to consider.

caymandive

iTrader: (2)

Toyo Proxy 4 all-season ultra high performance. These tires are lighter than the PS2 front tires and are slightly wider and lower in diameter for increased acceleration all the while costing $854 shipped.

Toyo Proxy 4 vs Michelin PS2s

OEM Front
225/40/19
23lbs each
26.1" diameter
9.1" section width

OEM Rear
255/35/19
26lbs each
26" diameter
10.2" section width

Toyo Front
235/35/19
22lbs each
25.6" diameter
9.4" section width

Toyo Rear
265/30/19
26lbs each
25.3" diameter
10.6" section width

TherealFIG

James I think one downside to the toyo's is the loss of 3/4" of tire. That is something that will affect ride.

So did the PS2 come stock for most of you? mine has re050's on it.

caymandive

iTrader: (2)

Yeah the fronts will be .5" shorter in diameter and 3/4" shorter in the rear, but the sidewalls will be softer than the max performance tires that come with the car so maybe the ride quality would be about even?

As for the PS2's I think most did get the RE050's.

ToothDoc

I currently have 225 40 18 up front (temporarily during drag racing season) which ends up being 1" shorter in diameter. More than anything, the front wheel gap really sucks. Ride height is 1/2 lower in the front too so I have to be careful of speedbumps. Once drag season is over, I'll be putting 225 45 18's up front to go back to stock "gap". I got PS2s - they're wearing pretty evenly - plenty of tread left and I'm at over 5K miles.

CDNROCKIES

Check out my new post "Winter Wheel Option". It has pics of a possibility.