12-18-2018, 11:42 AM | #23 |
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Thinking about doing spacers. I am only running 245s up front so I was thinking 20mm for front then in the rear I have 275s and I want to run 25mm or 30mm, any suggestions?
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12-18-2018, 11:53 AM | #24 |
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Wheel spacers will dramatically shorten the life of your wheel bearings, better off getting rims in the correct backspacing.
Spacers act like a lever on the bearings by mounting the wheel out further multiplying the forces they recieve. Getting correct offset rims still mounts the rim on the hub the same location as OEM and they do not lever multiplying the forces even if the offset is different. Ask your dealer how much it is to replace all 4 wheel bearings... cheaper to buy the correct rims |
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12-18-2018, 11:55 AM | #25 | |
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12-18-2018, 12:00 PM | #26 | |
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all about wheel track and track gauge. It's a calculation that we made back in university in physics, for the forumla SAE club. basically, the V -shape make the inner friction forces in a way to keep the car on the track, when car change directions. (in most cases, rwd cars got wider wheel track, while fwd got wider front. (ie s2000 VS civic) That was, back in the days, a covered subject with all those F&F civics with equal lenght axles and ditchs.... more info in that book : https://www.amazon.com/Tune-Win-scie...words=Tune-Win Does it will change something on a X3 with 10mm overall difference ? probably not, but I would stay equal anyway. This had been said, next summer I'll run some style 132 with 275 back, 245 front oe specs. In that color : |
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12-18-2018, 06:59 PM | #27 |
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12-26-2018, 03:29 PM | #28 | |
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This with use of spacers on over 15 bmw's and 15 years. |
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12-27-2018, 12:50 PM | #30 |
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If someone is considering spacers, it should definitely be a hubcentric model. Otherwise pass
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01-23-2019, 06:13 PM | #31 |
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This is a very timely thread for me! Just picked up a 2011 X3 3.5i M Sport and one of the first decisions is what to do about tires. I've been kind of leaning toward the Firestones based on reviews, but just came across a brand new set of Michelin Latitude Tour HP runflats. They're 255/50 (from an X5 and I can pick them up fpr $600 which certainly got my attention!
I know they're bigger than the stock 245/45's I have now but that doesn't bother me as long as they'll fit. I'll be moving to the Durango,CO area later this year and our cabin is about 20 miles away from the nearest paved road... Any input greatly appreciated! BB |
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01-24-2019, 08:42 AM | #32 | |
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01-24-2019, 08:51 AM | #33 | ||
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01-29-2019, 04:11 AM | #34 |
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Yeah - I did some additional research and figured out the same thing. Thanks very much for the replies!!
I finally settled on: Yokohama ADVAN Sport A/S 275/40-19 all the way around. I also picked up 4 20mm spacers I'm going to try out. Also investing in an emergency tire repair kit & a membership to AAA, which still ends up being a lot less than any decent runflats I looked at |
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01-29-2019, 12:01 PM | #35 | |
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02-25-2019, 11:48 PM | #36 |
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Upsized to 255/45/19
Greetings!
I did a modest upsize of my stock tires from 245 > 255/45/19. A little wider, a little fatter sidewall thickness, but all within OEM specs and blessed by my local BMW service rep. My X4 has the M sport suspension, non adjustable. Not having ordered the dynamic dampers, I was desperate to improve the ride quality as the OEM goodyear LS2 runflats are dreadful over crappy roads. I also have winter tires on 18" rims for half the year, so the summer time seemed even harsher in comparison. I got the best, all around balanced tires I could find.. the Pirelli P7, or as rated by the community. I'm happy to say I couldn't hope for a better balance of ride quality, traction and road feel. Last edited by spucktacular; 12-20-2023 at 02:10 PM.. |
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02-26-2019, 06:40 PM | #37 | |
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I was following up your discussion in regards with the wheels. I am conisering buying a new first generation X4 and don't like the staggered setup from many apsects. How is your setup look like? Will it void the warranty? and do the rear looks awkward with narrower tires than what the factory installed. Not the last, do you have a picture? thank you kindly! |
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