08-11-2020, 10:22 AM | #1 |
First Lieutenant
95
Rep 334
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MSport 704 suspension too stiff, move to 18”?
Even with regular P7 tires, under inflated, I find the suspension unable to soften these local roads. Thinking of moving from 19” to 18” with the taller side-walls. Do you think that would make a significant difference? Thanks for your help.
‘19 540ixMSport |
08-12-2020, 07:56 PM | #2 |
Captain
1034
Rep 726
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My 540i M Sport with 704 sport suspension came with the P7 A/S runflats. I didn't find the ride uncomfortable, actually fairly compliant given the stiff sidewalls of the P7's but the traction in dry and wet is awful with those tires. After just 14k miles I replaced them with Michelin Pilot A/S 3+ non-runflats and the ride is better and traction much, much better. You can pick other non-runflat tires but the ride is almost always more compliant than with runflat. With 18" wheels it could be better, but you'd still want non-runflats for most ride improvement, though steering response could be less depending on tire choice.
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Bluegrass Bimmers
Current: 2019 G30 540i M Sport | 2022 & 2018 G01 X3 xDrive30i Past: 2017 F30 340i M Sport/6MT | 2013 E70 X5 3.5 | 2011 E90 ///M3 6MT | 2005 E46 330i ZHP 6MT | 2001 E53 X5 3.0 | 2000 E39 528i Sport/5MT | 1998 E39 528iA | 1997 E38 740i | 1993 E36 318is |
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09-17-2020, 10:05 AM | #3 | |
Captain
332
Rep 736
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Quote:
See above post - replace RFT with Michelin A/S 3+ or PS4. For emergencies, I have a Tireject package with valve remover, plug and Kensun Air Compressor). See TireRack Ride and handling is improved vastly, especially on normal city streets, which get choppy in RFT.
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2017 540i M, Carbon Black/Mocha, 20 in. on Michelin PS4S, CF Mirrors/Rear Spoiler
2009 328i 6 spd stick, Crimson Red/Sport Suspension, Bavsound Stage 1, 2 Former BMWs: '79 320i, '84 325e, 2000 328i, 2014 535i |
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