03-28-2020, 01:43 PM | #1 |
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225/40R20 to 235/40/R20 tires...
Featured on BIMMERPOST.com Because A) the runflats are a bitch, and B) ...see A. I ran the change thru this tire calculator. https://www.tacomaworld.com/tirecalc...0r20-235-40r20 Difference in speedo etc seems negligible. Anyone here swap out their RFT's yet? 225/40R20 to 235/40/R20s? Would going slightly wider be an issue on this particular vehicle? Thanks in advance for any insight.
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Retired: '20 X2 M35i/'17 340i Track Pack/'15 X1 35i MSport
Last edited by connerry330i; 03-28-2020 at 01:57 PM.. |
03-28-2020, 05:00 PM | #2 |
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I swapped out the runflats for both the winter and summer sets. I stayed with 19s in stock width. You will notice a better ride and better traction, if you are getting summer rubber...not bad side effects.
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03-28-2020, 07:05 PM | #3 | |
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3 available options in 235/40/R20 including Pilot Sport A/S 3+ and Pilot Sport 4s. There's a third option, but who cares?
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03-29-2020, 01:16 PM | #4 |
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Mine: 2019 Mini Cooper S / Moonwalk Grey / Black Interior
Wife's: 2018 X2 XDrive 28i / MSport X / Mediterrean Blue / Mocha Dakota Leather Previous: 2008 E92; 2014 F30; 2016 F30 M Sport; 2011 E82 (Man I miss the 1er!) |
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03-30-2020, 11:55 AM | #5 |
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Stock wheel diameter is 8" (for the 19s) so you can actually go as wide as 245 without a problem. I do worry about overall weight, but that's a different story. Keep us apprised of your plans on the car
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03-30-2020, 01:23 PM | #6 | |
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I'm not even sure how these Goodyears perform...I haven't the slightest idea why they put them on over the PZero's but I'm in the break-in period so I can't really even push the damn thing yet to get a sense of near-limit performance. PZ's were on my old X1 35i, which had the Msport suspension...run flats, sure but the ride was acceptable on 19's. On the 20's these things are ridiculous. However my wife has NOT complained, so I got that going for me, which is nice.
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03-31-2020, 08:21 PM | #8 |
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There is a thread in the X1 forum.. in order to get a spare tire safely mounted you will need to figure out the hardware/screw and modification needed to hold it down. After that you need to find the right sized spare that would fit over our M brakes and match the tire size. Getting a jack kit is super easy (harbor freight sells a scissor jack almost the same). When I switch to regular tires I will probably just forget it, since I will mostly be within 100 miles of my own home and have AAA towing. Also to note, BMW's come with road side towing for the first 3-4 years anyways.
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