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Discussion Starter #1
I'm looking into changing the rims for my F... just wondering whats the best fittment for it? front and rear??
 

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min of 18" on the F
Sometimes thats too small, depending on the wheels specs and clearance.

Give us more of what your looking for chinkzzz :cool: Do you know what size you want to go with? Lightweight, forged, 1 piece, 3 piece, etc? Do you have any in mind? Pics? :)
 

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Sometimes thats too small, depending on the wheels specs and clearance.

Give us more of what your looking for chinkzzz :cool: Do you know what size you want to go with? Lightweight, forged, 1 piece, 3 piece, etc? Do you have any in mind? Pics? :)
Yeah, the 18" MSW wheels I have for my snow tires just barely clear the front calipers. Thankfully the Tire Rack could recommend wheels that fit.

Jeff
08 Smoky Granite Mica IS-F
 

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Discussion Starter #7
Sometimes thats too small, depending on the wheels specs and clearance.

Give us more of what your looking for chinkzzz :cool: Do you know what size you want to go with? Lightweight, forged, 1 piece, 3 piece, etc? Do you have any in mind? Pics? :)
thanks bigmike, I'm thinking running on 20" 1 piece forged. gtr-face. have no idea in mind what rims should go with, just had a thought of volk progressive te. and good suggestions? thanks again...
 

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Does anybody know what the stock offsets are on the F? This seems to be pretty difficult information to get. I don't know why:confused: I can't find it anywhere in Lexus's specs.

Lou
 

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Discussion Starter #10
Our system says the factory specs are as follows:

Front-19x8 et 45
Rear -19x9 et 55
do you know whats the best fittment for aftermarket rims? I'm wishing to go with 20" but it wouldnt hurt to know whats 19"and 20" both.

front 19x9 et?
rear 19x10 et?

front 20x9 et?
rear 20x10 et?


or is there any other better suggestions? please let me know. thanks!!!
 

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Discussion Starter #11
also, i'm thinking to put 245/35/xx front and 275/30/xx... good setup? or anything better?

come on guys... help me out...
 

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Best fitment
front 8.5" +38 mm
rear 9.5" +48 mm

If you want a little more aggressive with the chance of rubbing,rolling fenders etc. add more width to either and lower the offset. For example:

front 9" +35
rear 10" +40

This info would be for either 19" or 20"

Tires: 245/40/19
275/35/19


245/35/20
275/30/20

Best setups to keep your rolling diameter in check....
 

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do you know whats the best fittment for aftermarket rims? I'm wishing to go with 20" but it wouldnt hurt to know whats 19"and 20" both.

front 19x9 et?
rear 19x10 et?

front 20x9 et?
rear 20x10 et?


or is there any other better suggestions? please let me know. thanks!!!
Our fitment guide is a little more conservative. We suggest the following:

Front(9") - 40mm to 46mm
Rear(10") - 50mm to 65mm


I agree with FCchampOH on the tire sizes.

F-245/40-19
R-275/35-19


F-245/35/20
R-275/30/20
 

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I disagree with you both on the tire sizes. Using those sizes will increase the OD by an inch and throw off the speedometer. To maintain the stock height, go with 245/35/19 and 275/30/19. When my OEMs go, I'm thinking about going with 235/40/19 and 265/35/19 on the stock wheels. A little bigger in diameter, but not enough to really matter, IMO. However, there seems to little room in front, and I'm reluctant to going any wider than 235 in cross section. Also, at this point in time, there doesn't seem to be a good solution (read selection) as far as tire brands and models for the two sizes I have in mind.

Lou
 

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We are splittin hairs here. The sizes that we recommended are 6 to 8 tenths of an inch bigger than stock tire diameter. As you said..not really enough to really matter. I have run 245/40/19 front and 275/35/19 rear on the IS-F without any issues. There might be a closer size than what we described but finding a decent manufacturer who makes the sizes can be an issue. A wider cross section on a front tire will pull around a bit more in the ruts in the road for sure but you will gain grip and crisper turn in. Seems like there is a trade off for most changes you make on a car.
 

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I disagree with you both on the tire sizes. Using those sizes will increase the OD by an inch and throw off the speedometer. To maintain the stock height, go with 245/35/19 and 275/30/19. When my OEMs go, I'm thinking about going with 235/40/19 and 265/35/19 on the stock wheels. A little bigger in diameter, but not enough to really matter, IMO. However, there seems to little room in front, and I'm reluctant to going any wider than 235 in cross section. Also, at this point in time, there doesn't seem to be a good solution (read selection) as far as tire brands and models for the two sizes I have in mind.

Lou
The sizes you list are certainly the closest to OE rolling diameter. I can tell you that a 19x9 with a 45mm offset will not rub on the front running a 255/35-19. On the rear, 19x10.5 with a 60mm offset will not rub with 295/30-19. Some people prefer a tire with a little more meat on the sidewall. Anything below 3% is acceptable on the IS-F.
 

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Discussion Starter #17
Thanks for everyones suggestions...

I'm considering more aggressive look for the car... so with the size 9" +35, 10" +40... anyone can post some pics of these size just to let me have a better idea of whats gonna be? thanks for all yours help.
 

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We did 20x9 in the front and 20x10.5 in the rear. Used JIC coilovers to lower the car 2.5 inches. Rides fine, but to some it may be a tad rough.


 

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video has been removed by user!! Also make sure the wheels clear BBK. I had 20's on the IS250 , went to put them on the F and BAM they did not clear the caliper in the rear, now I have to try and sell my 20's:

 
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