IS F (2008-2014) Discussion topics related to the IS F model

Yes, another question about tire sizes...

Old 06-17-15, 09:03 PM
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MileHIFcar
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Default Yes, another question about tire sizes...

I just ordered my wheels in a 19x8.5 ET35 Front & 19x9.5 ET45 Rear...........

I was just going to go with the standard 245/35 & 275/30 combination that so many seem to run, but I was thinking after reading some threads here that a wider front will help make the car more neutral, so I was thinking about running a 255/35 in the front as opposed to the 245/35...What do you guys think about this combo?

For now the only thing I'm going to do is install some Swift springs to lower that front gap by a 1" and the backs at .6"

Will this combination work without rubbing in the front is my main concern I think I'll be ok in the rear without having to roll my fenders?

Thx again guys
Old 06-17-15, 09:33 PM
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Sean
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I'll let others comment on the tire sizes but its very unlikely you will rub even with the springs. You won't need to roll the fenders.
Old 06-18-15, 09:06 AM
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Thanks for the response! As long as I don't rub in the front with the 255/35 with an 1" drop I think I'll be cool with that.

Curious though I notice some guys run a square set-up for handling purposes, I wonder why a staggered set-up was put on the ISF if you can equal out the traction Front to Rear then why not run a square set-up if traction is not an issue with a rear wheel drive vehicle??
Old 06-18-15, 12:11 PM
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torxuvin
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I'm running on swift springs with a 255/35 on a 10" wheel +43 in the front. No rubbing at all. You should be fine. Square does make that car more neutral.
Old 06-18-15, 04:02 PM
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^^^Awesome that's the feedback I was looking for! If your running a 10" wide in the front with no rubbing and on swift springs, and mine will be a 8.5 +35 with a 255/35 then it looks like I'll be ok on that front.

Do you have any pics of your car with that set-up?

If you don't think a square set-up makes the car more neutral, then what benefit do you have with running the 255/35 in the front??
Old 06-18-15, 04:20 PM
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torxuvin
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Originally Posted by MileHIFcar
^^^Awesome that's the feedback I was looking for! If your running a 10" wide in the front with no rubbing and on swift springs, and mine will be a 8.5 +35 with a 255/35 then it looks like I'll be ok on that front.

Do you have any pics of your car with that set-up?

If you don't think a square set-up makes the car more neutral, then what benefit do you have with running the 255/35 in the front??
I was agreeing with you. It does. I intend to see if I can fit wider tires when it's time to replace them. There are guys running 275/30s on the front with the right offset.




Old 06-18-15, 04:28 PM
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^^^^^My bad your right, I wasn't reading that correctly. Car looks good! What are your specs for the rear?

In my fitment the 255/35 will go on a 8.5" wide front with a +35 offset, so not as wide as yours, so I think my tire will hang over the wheel a little bit more, but will still be within the recommended widths of a 8.5" wheel. Discount tire direct said that a 225-255 is the recommended widths for a 8.5" wheel.
Old 06-18-15, 04:38 PM
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Originally Posted by MileHIFcar
I just ordered my wheels in a 19x8.5 ET35 Front & 19x9.5 ET45 Rear...........

I was just going to go with the standard 245/35 & 275/30 combination that so many seem to run, but I was thinking after reading some threads here that a wider front will help make the car more neutral, so I was thinking about running a 255/35 in the front as opposed to the 245/35...What do you guys think about this combo?

For now the only thing I'm going to do is install some Swift springs to lower that front gap by a 1" and the backs at .6"

Will this combination work without rubbing in the front is my main concern I think I'll be ok in the rear without having to roll my fenders?

Thx again guys
Just curious, what tires are you planning to go with? Those wheels are the same sizes as my 2011 stock wheels and I was looking at tires, slim pickings for those sizes you mentioned.

Looks like you're in Colorado, me too
Old 06-18-15, 05:08 PM
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I'll PM you
Old 06-18-15, 06:48 PM
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You shouldn't have any issues running 255/35R19 and 275/30R19 on the wheel specs you mentioned.
Old 06-18-15, 07:24 PM
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A 255 on a 10" rim is stretched. A lot. I'm running 255s on the front with the OEM 2014 8 1/2" wheels. I had 245s, but couldn't get new ones, so I put my previous rears on the front, and they work really well. If I had 10" rims, I'd be running 275/285 without a doubt.
Old 06-18-15, 07:47 PM
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Originally Posted by lobuxracer
A 255 on a 10" rim is stretched. A lot. I'm running 255s on the front with the OEM 2014 8 1/2" wheels. I had 245s, but couldn't get new ones, so I put my previous rears on the front, and they work really well. If I had 10" rims, I'd be running 275/285 without a doubt.
Yeah. There is stretch. Definitely not ideal IMO. Hazard of buying used. It helps a little that PSS are among the wider tires. 275 square is the goal. I don't think I have a chance of 285 without risking rubbing on the inside. I'm still running my OEMs on track.

Mile,
Thanks. My rear wheels are the same. 19x10 +43. 265/35 are on right now. Slight roll in the back. I'll have to get more aggressive with it when I go up in size. With the right specs (read: less aggressive offset) you can fit 285/295 without any fender modifications.
Old 06-18-15, 10:47 PM
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Originally Posted by Gymkata
You shouldn't have any issues running 255/35R19 and 275/30R19 on the wheel specs you mentioned.
Thanks Just wanted to make sure before I order the tires.

Originally Posted by lobuxracer
A 255 on a 10" rim is stretched. A lot. I'm running 255s on the front with the OEM 2014 8 1/2" wheels. I had 245s, but couldn't get new ones, so I put my previous rears on the front, and they work really well. If I had 10" rims, I'd be running 275/285 without a doubt.
Curious, what size are you running on your rears if your running a 255/35 up front? Any pics of your setup, and what tires are you running thx

Originally Posted by torxuvin
Yeah. There is stretch. Definitely not ideal IMO. Hazard of buying used. It helps a little that PSS are among the wider tires. 275 square is the goal. I don't think I have a chance of 285 without risking rubbing on the inside. I'm still running my OEMs on track.

Mile,
Thanks. My rear wheels are the same. 19x10 +43. 265/35 are on right now. Slight roll in the back. I'll have to get more aggressive with it when I go up in size. With the right specs (read: less aggressive offset) you can fit 285/295 without any fender modifications.
Ahhh, ok that makes sense. Yea I've seen a few CL F owners run some crazy wide tires with a less aggressive offset like +50 or something right?
Old 06-18-15, 11:46 PM
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KJH
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I can't imagine the need for this thread when the threads below exist and continue to be active:
https://www.clublexus.com/forums/is-...el-thread.html
https://www.clublexus.com/forums/is-...is-f-pics.html

We get that you were excited to be searching for an IS-F. We also understand your excitement about acquiring the F of your dreams but Geez, man, blowing up this subforum with your 190 pre-purchase posts and, now, this is a just a bit much, don't you think? PM works well, too, if you haven't tried it. Congrats on your USB. Great looking car. Enjoy it to the fullest.

Ken.
Old 06-18-15, 11:53 PM
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Originally Posted by KJH
I can't imagine the need for this thread when the threads below exist and continue to be active:
https://www.clublexus.com/forums/is-...el-thread.html
https://www.clublexus.com/forums/is-...is-f-pics.html

We get that you were excited to be searching for an IS-F. We also understand your excitement about acquiring the F of your dreams but Geez, man, blowing up this subforum with your 190 pre-purchase posts and, now, this is a just a bit much, don't you think? PM works well, too, if you haven't tried it. Congrats on your USB. Great looking car. Enjoy it to the fullest.

Ken.
Uhhh....Nice to meet you too Ken Thx I guess lol....

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