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12-24-2020, 02:53 PM | #1 |
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245mm square setup fits!!!
I really had my doubts this would work, but I'm very happy to report that I was able to fit 245/40/17 in the front with no rubbing...so far. I did some aggressive street driving and didn't rub once. That's not to say you couldn't rub on a rough track, but you could always roll the fenders.
Important fitment FAQs 1) Tires are Michelin Pilot Sport 4S 245/40/17. Specs are 9.6" section width, 8.3" tread width, and 24.7" diameter. I really don't know how Tire Rack measured the tread width. Based on specs, these have some of the narrowest tread width for their size. That doesn't seem right. They have a very square shoulder in my opinion, much more square than the Continental ExtremeContact Sport which supposedly have a wider tread width in the same size. Regardless, they don't taper much. 2) Wheels are 17x8 OZ Leggera HLT with 45 mm offset. Many wheels are going to be 17x8.5 which adds around .2" to the section width. My 8" wheels are the minimum width for a 245 tire. The 45 mm offset also brings them pretty close to the strut. Ideally for an 8" wheel, I would have preferred something like a 48 mm offset just to give me a little more fender clearance. 3) I have M3 arms and pulled pins, giving me -1.2° camber in the front. I'm riding on T1 BMWP springs in the front with BMWP struts. I made no modifications to the fenders.
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Last edited by Thunderguts; 12-24-2020 at 03:46 PM.. |
12-24-2020, 03:05 PM | #4 |
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More importantly, I need to upgrade the rears now. My rear tires should get here Monday. I feel silly driving with 245 in the front and 225 in the rear.
I need to wash the car and re-clearcoat my center caps. Then she'll be ready for full body pictures.
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12-26-2020, 01:59 AM | #5 | |
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I'm beginning to rethink my choice of 8" / 40mm offset wheels. The plan was to use either Falken or Nexen UTQG 200 tires in 235 but fallback to 225 if the 235's rubbed. I'm limited by some classification rules and won't be allowed to add the camber goodies. Strangely enough, the rulebook allows upgrading bushings and rolling fender lips. |
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rho12328.00 |
12-26-2020, 10:29 AM | #6 |
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Just FYI, the M3 arms actually reduce clearance at the fender, even though they are increasing camber. To improve fender clearance, you have to move the top of the strut inwards, such as removing the pins, or adding camber plates.
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12-26-2020, 06:57 PM | #7 |
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Thanks for the clarification about the M3 arms!
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12-26-2020, 09:54 PM | #8 |
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And what if you had both the M3 arms and plates? Pardon my ignorance about this.
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12-27-2020, 09:37 AM | #9 | |
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03-21-2021, 09:40 PM | #10 | |
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03-22-2021, 10:27 AM | #11 |
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Oh yeah, I put them on a week later. No issues at all. I haven't rubbed once in the 3 months I've had them. Oddly enough, the grip of the PS4S doesn't seem as impressive when the temperatures warmed up. They simply annihilate the Contis in cold weather, but much less so above 80 degrees. I'll need to check tire pressures though. The warmer temperatures could be causing too much pressure and lowering my grip.
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Official BMWP Whore - BMWP suspension kit w/ M3 arms, BMWP big brake kit, BMWP intake w/Mishimoto tube, BMWP exhaust, BMWP carbon strut brace, BMWP short shifter, and BMWP carbon spoiler. OZ Leggera HLT w/ 245 square setup.
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04-05-2021, 01:11 AM | #12 |
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Hey, I am looking at running a similar set-up. Only thing is that mine is fully stock.
Wheels:Front and Rear - FAST FC04 17x8" ET45 Tires:(Potentially) Firestone Indy 500 245/40/17 Suspension and Mods:Totally stock with M-Sport suspension. What are your thoughts? Would appreciate any recommendations on suspension or tires. Thanks! |
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04-05-2021, 01:56 PM | #13 | |
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Alternatively, roll the fenders? I see you're in Toronto - the guys at Automatrix are great. |
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04-05-2021, 02:40 PM | #14 | |
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If you're perfectly stock, you should be able to fit that setup without any issue. I don't think you'd even need much negative camber at stock ride height. If you lower it, you'll need to make some camber adjustments.
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04-07-2021, 01:43 PM | #15 | |
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Last edited by Luftmeister; 04-07-2021 at 02:00 PM.. |
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04-07-2021, 03:16 PM | #16 | |
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04-08-2021, 12:02 AM | #17 | ||
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I am thinking of going 235/45/17 now, rather than 245/40/17. May go wider in the future when I decide to upgrade my suspension and have more adjustment options. |
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04-08-2021, 11:51 AM | #18 |
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235 mm turns out to be a fairly odd size. I found very few good 235 tires. That's why I went with 245. You can find almost any tire in 245.
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Official BMWP Whore - BMWP suspension kit w/ M3 arms, BMWP big brake kit, BMWP intake w/Mishimoto tube, BMWP exhaust, BMWP carbon strut brace, BMWP short shifter, and BMWP carbon spoiler. OZ Leggera HLT w/ 245 square setup.
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04-30-2021, 08:40 AM | #20 | |
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05-07-2021, 02:07 PM | #21 |
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Nice work. I am struggling to fit a 235 RS4 in the back, that tire must be wide
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05-07-2021, 02:08 PM | #22 | ||
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