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08-14-2022, 08:19 AM | #1 |
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Getting ready for winter on my daily Harrop e90
I picked up a set of 4 Apex ARC-8, et25, 18" x 10". The previous owner used them as a square setup for the track with 275 35 18s on his Dinan e90 without rub. My intent is to use these rims for my non-summer tires, and I've been oscillating between a performance off-season (conti or michelin as4s) versus a performance winter tire. My area gets snow 0-2 times a year and temps require a solution other than summer tires around 8 months a year for this daily driver.
I'm very wary about a square setup for a road driven e90 due to risk of tramlining but open to others experience. I had a 328i e90 years ago with the M sport suspension and it was spooky bad on grooved pavement. At the moment I'm leaning toward the Conti extreme sport all season in the 18" 245/40 front and 265/40 rear. The table indicates a 10" wide rim is the widest size possible for the 245s and the 265 is perfect on that rim. Looking for feedback: Performance All season versus performance snow tire (temperate Pacific Northwest) Running 245 on a 10" wide rim Using Apex racing wheels on a daily Square 265s on a daily |
08-14-2022, 06:50 PM | #2 |
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Running a 265 with that sidewall MAY cause issues in the front. There were a couple of people that cracked the fender by running a rear comp wheel (19x10 +25) with the OEM rear tire size in the front (265/35/19)
Granted yours is an 18" setup, but running a 265/40/18 may pose the same problems, especially considering its the same offset as the example above. (+25) |
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CamasM3e933484.00 |
08-14-2022, 07:01 PM | #3 |
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maybe 255/40 squared .. I have put a combined 30,000+ miles on 275 / 285 squared tire setups and have never had any issues. Your tolerance could be a lot lower than mine however.
BMW made excellent wheels for winter driving (270Ms) .. they're a perfect offset for our cars and narrow enough that you can run smaller tires (235/245 squared) without issue. Maybe go for a set of those? 10" is pretty wide if the intention is (NON) summer driving. |
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CamasM3e933484.00 |
08-21-2022, 07:25 AM | #4 | |
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My 911 has performance winters and they are amazing but I think on the M3 standard winters are the way to go for me. Thinking Michelin X-Ice Snow or Viking Continentals. That said the stiffest winter tire without compromises due to that stiffness is probably best for this car as its soft to me, at least from the factory. |
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10-28-2022, 09:32 PM | #5 | ||
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10-28-2022, 09:57 PM | #6 | |||
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Matt Fojtik135.00 |
11-08-2022, 03:55 PM | #7 |
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Somewhat relevant to your question as vehicle and power/dynamics are the same.
I DD'd my Harrop Supercharged E90 in Utah on 235/40/18 and 255/40/18 Dunlop Winter Sport 3D for 4 years. I did not experience any tram lining, and the dry traction (while a compromise compared to Super Sports) was not as bad as I originally was expecting. I chalk this up to choosing 'Winter Performance' tires versus 'Snow' tires. I still enjoyed driving "in boost" when dry and very confident during inclement weather, so 255 should be a good size for you. My tire decisions were made based on the low road temperatures with many weeks with single-digit low temps with frequent dry/compact snow. Given the PNW where it is more of a function of wet traction plus low road temperatures, I'd option for a 'Performance' all-season tire with an M+S Rating. In addition to the tire you mentioned, the Conti Extreme Contact DWS06 will fit the wheels you have and be capable in the occasional snow day. With all that said, having lived in the Seattle area for 30 years prior to moving to Utah, so many drivers up there don't have proper tires for winter driving, and I would just stay home on those few days per year when snow accumulates. Having proper gear on your car will help avoid the out-of-control cars when moving, but some Karen in her Kia with 7-year-old worn tires will slam into the back of your car at a stoplight. Joking not joking.
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11-08-2022, 04:45 PM | #8 | |
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