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

H&R spacer sizing...lowered and 245/275 PSS tires

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Old 09-09-16 | 05:59 PM
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I've got 5mm up front and 15mm in the rear on 245/275 combo. I'm tucked on BC coilovers. I'm rolled with the slightest pull in the rear and could easily fit another 5mm. I've got tons of room in the front though.
Old 09-10-16 | 09:36 PM
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Originally Posted by ljdsong
Im running 255/275 , your fine with 245 with 20mm in front but you have to rolled your fender with 15mm in the rear. I have 2008 F.
Interesting. With the 20mm in front and 15mm in the rear, are your F and R wheels equally flush? ie: With the 20F/15R spacers, is the rear more sunken (less flush) than the front? Or is the front more sunken than the rear when stock (I'm not near my car right now - can't measure)? Do you have pics? Thx.
Old 09-14-16 | 12:35 AM
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20mm F with 255/35/19
15mm R with 275/35/19


Originally Posted by Tom2769
Interesting. With the 20mm in front and 15mm in the rear, are your F and R wheels equally flush? ie: With the 20F/15R spacers, is the rear more sunken (less flush) than the front? Or is the front more sunken than the rear when stock (I'm not near my car right now - can't measure)? Do you have pics? Thx.
Old 09-19-16 | 10:34 PM
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Originally Posted by ljdsong
20mm F with 255/35/19
15mm R with 275/35/19
i just did the same setup and it looks great 👍
Old 09-20-16 | 12:36 AM
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I used to run a 245/275 PSS setup with 15mm front H&R's and 20mm rear on the stock wheels before I got my track setup. We did roll the fenders so it would only rub on really extreme potholes/bumps.

Old 09-20-16 | 10:04 AM
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Originally Posted by Apexsports
I used to run a 245/275 PSS setup with 15mm front H&R's and 20mm rear on the stock wheels before I got my track setup. We did roll the fenders so it would only rub on really extreme potholes/bumps.
Thanks Apex, yours is the first example I've been able to find of someone who successfully ran a 20mm rear spacer with 275 PSS wheels (275/30, I assume?). I can live with rubbing on extreme potholes or dips - looks like it's time to place an order and roll/shave my fenders. BTW, were you lowered in the rear at all when you ran that setup, or stock height?
Old 09-20-16 | 12:32 PM
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Originally Posted by Tom2769
Thanks Apex, yours is the first example I've been able to find of someone who successfully ran a 20mm rear spacer with 275 PSS wheels (275/30, I assume?). I can live with rubbing on extreme potholes or dips - looks like it's time to place an order and roll/shave my fenders. BTW, were you lowered in the rear at all when you ran that setup, or stock height?
I have the same set up on stocks...I have the 2010 wheels w/ 20mm spacers....im ONLY lowered in the front on Swift springs...I didn't put springs in the back bc than I would have had to roll my fenders. I had attempted to put springs in the back with spacers but my wheel well was rubbing on my tires really badly so I either had to have no spacers or no springs in the back. Ultimately I took my springs off to put my spacers on bc I cant stand it when it doesn't look flush.

I think the rear stock height wasn't to bad esp with spacers. I rub on the front when going over pot holes etc and when I turn my wheel all the way in reverse.
Old 09-20-16 | 12:48 PM
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Good to know, Kings. I've not fully decided on a suspension setup yet, but have strongly considered doing the same - Swifts in just the front, and leaving the back stock height. I'd choose the more aggressive offset over the lower rear as well...
Old 09-20-16 | 01:51 PM
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Originally Posted by Tom2769
Good to know, Kings. I've not fully decided on a suspension setup yet, but have strongly considered doing the same - Swifts in just the front, and leaving the back stock height. I'd choose the more aggressive offset over the lower rear as well...
I honestly really like how this set up is....here's two pictures just for reference.

H&R spacer sizing...lowered and 245/275 PSS tires-car.jpg
H&R spacer sizing...lowered and 245/275 PSS tires-car2.jpg
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