03-18-2018, 04:53 AM | #1 |
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20 inch with runflat
Bought a slighly used 2016 340i m sport mppsk, can pick it up end of this month. The car has all options I was looking for, the only thing are the rims and tires, It has 20 inch 624 m sport rims with runflat tires. I test drove the car and didnt like the feel compared to the 18 inch Michelin sport 4 tires fitted under my 320i. Will it improve when I replace the rft tires with normal tires or shall I replace them with 18 or 19 inch rims.
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03-18-2018, 07:59 AM | #2 |
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The comfort will improve with normal tires!
RWD or xDrive? You could get higher profile tires 245/35-20 front and 255/35-20 rear will fit, or with xDrive 245/35-20 square even though the wheels are staggered. Higher profile tires will improve the comfort further. |
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03-18-2018, 11:01 AM | #3 |
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You'd have no problem trading those for a set of 400m wheels, and you could probably get a bit of cash back.
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03-18-2018, 12:58 PM | #4 | ||
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thanks for the replies
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03-18-2018, 02:44 PM | #5 |
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It will definitely improve with go-flats.
I changed myself from OEM Pirelli RFT to Continental Non-RFT on my 405M 20". However it is still a harder ride compared to my 18" winter non-RFT. But for me in summer, that's what I want. 20" wheel setup however is very tricky in bad road conditions. Much easier to get scratches on the rims or brake the rim in potholes. But that's less a problem where I live.
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03-18-2018, 03:43 PM | #6 | ||||||
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03-19-2018, 02:18 PM | #7 |
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Thanks.
Asked BMW to replace the tires with non rft tires and 35 height. Hope the old tires dont pass the minimum requirements for "premium selection". Waiting for an answer I live in The Netherlands, we have one of the best road systems in the world. |
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03-19-2018, 04:43 PM | #8 |
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except for F34's which have an o.d. of 27", all other F-series are spec'd with an o.d. of 26". increasing the aspect ratio 5% will fill the wheel well and give a better ride and fix the (shows fast) speedometer but it will also raise the total vehicle height 0.5" and somewhat ruins the looks of 20's w/low pros. in theory, taller final gearing at the pavement and a heavier tire should affect your acceleration. it will, however, accrue less miles on the odometer than actually traveled(sort of a good thing). it will be interesting to see if BMW will actually follow through with your request as i feel it puts the car too far off spec.
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03-20-2018, 05:23 PM | #9 |
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I recently replaced my Pirelli RFT 20's with normal tires. The ride improves dramatically. While it's still not what I'd call "soft", it's comfortable, quieter, and handles better.
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03-29-2018, 08:34 AM | #10 |
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I went from pzero runflat to michelin ps4s non-runflat and the difference is incredible. Despite the driving/direction is not as sharp as a runflat, I much prefer the michelin.
OEM size is 225/35/20 & 255/30/20 and I went for 235/35/20 & 265/30/20 (oem size were not available last year for the ps4s). The ride is much smoother but still very sporty, you'll not regret it. |
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04-06-2018, 02:53 PM | #11 | |
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Will burn these tires and go for the ps4 235/35/20 & 265/30/20 |
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