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04-12-2020, 08:01 AM | #1 |
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upsizing 265 to 275
Hello folks
will upsizing of 235/35 -> 245/35 and 265/30 -> 275/30 give me a big comfort difference on 19" rims? my current setup feels like too stiff |
04-12-2020, 08:07 AM | #2 |
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I'm no expert but I don't think you'll notice the difference going to a wider tire. I had 19" on my Z4MC and those side walls are pretty short. I think if you want to soften the ride you'd probably have to go to an 18" rim, or softer suspension components.
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04-12-2020, 08:28 AM | #3 |
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its not about comfort only, I have my 10" rims and 265 looks odd on them, thats another reason for upsizing
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04-12-2020, 08:46 AM | #4 | |
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https://www.tyresizecalculator.com/c...rim-size-chart |
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04-12-2020, 09:12 AM | #5 | |
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I learned my lesson too late as I had bought my tires already, I went back to OE sizes and went with a tire that is too stiff on the sidewall, so the change from the 19s to the 18s was not significant in my case even when I added a significant amount of sidewall height. I was running Falken on the 19s and Now Potenza S007A, which is a good tire and much better to the budget Falken subjectively, but stiffer. On the upside it makes the car feel more direct. Whatever you do, go with a good tire even if you need to budget up |
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04-12-2020, 09:51 AM | #6 | |
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post #2050 my rear tires are too small for my rims but I got this way and now trying to fix it |
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04-12-2020, 09:52 AM | #7 | |
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04-12-2020, 10:32 AM | #8 |
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OP, are you running 10" wide wheels on all 4 corners? If so, that 235 or even 245 are still too narrow for the 10" wheel.
The rear, especially looked stretched in your post. I don't remember 275 on a 10" wide wheel being that stretched, so may be going to 275 will help a bit. As "maupineda" indicated, tire is a factor too - not all 265/30 have the same treadwidth. Some have more squarish shoulders than others. I think 285/30/19 is best on a 10" wide wheel. Even my 275/30/19 Conti's on 9.5" wide wheel have a tiny bit stretch, which I think can be fixed going to MPS4s |
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04-13-2020, 06:06 AM | #9 | |
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I don't think that I can fit 285 in my car Thanks |
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04-21-2020, 12:19 AM | #13 | |
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I'm running a 275/30 Firestone Firehawk Indy 500 on a 19x10 ET 38 with a 15m space. I rub the outside face of the tire under really hard compression (on track only) so going down to a 12 or 10mm spacer will possibly fix the outside rub on this tire but not sure if I'll rub on the inside. PS I have a set of H&R coilovers I used for about 10k km if interested.
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04-22-2020, 12:58 PM | #15 |
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AK click on any tire and hit specs on the next page.
Compare the section width and the measured rim width, it tells the story of the theoretical bulge in a particular tire. https://www.tirerack.com/tires/TireS...earDiameter=17
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Last edited by Steeler; 04-22-2020 at 01:18 PM.. |
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04-22-2020, 10:07 PM | #16 | |
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04-24-2020, 05:05 AM | #17 | |
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M359 wheels specs Front Wheels - 19x9" ET31 Rear Wheels - 19x10" ET25 |
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07-04-2020, 12:14 PM | #19 |
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Too hot outside today to do anything outside so I'm looking at what mods I want to do on my Z4MR and it seems that on both the exhaust and rim/tire threads, you have done exactly what I want to do. Where did you buy your rims or did they come with the car when you purchased it? Looks real nice btw.
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07-05-2020, 06:58 AM | #20 | |
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I purchased them from local guy, BMW OE M359s hard to get and they pricey so I would suggest you to go with avant garde rims |
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