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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > Wheels and Tires -- Sponsored by The Tire Rack > Pilot Sport A/S 3+ feel...bouncy?
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      06-14-2018, 11:51 PM   #1

Drives: 2015 328i Xdrive
Join Date: Jun 2018
Location: Indianapolis

iTrader: (0)

Pilot Sport A/S 3+ feel...bouncy?

Howdy folks,

Bought my 2015 328i xdrive last August. Love it. Great upgrade from my two Accords. Fine enough mid life crisis car for a guy who still needs a dad taxi.

Anyway, just swapped the stock Conti RFTs for Michelin Pilot Sport A/S 3+ last Friday. 225/50/17. Love the improved grip - traction control hasn't kicked in once since I got em. Ride comforts fine, road noise fine, haven't bothered to notice mileage yet.

I see from other posts that I'm not the only one to notice how much lighter the steering is with these tires. The car also feels... probably not the right word but - a bit bouncy, and I think I feel a bit more body roll. For casual driving, doesn't matter but I've taken my favorite two lane three turn freeway 70 mph (well, the yellow sign recommends 40, ahem) exchange a couple times now and didn't feel as planted in transition or in the midst of its big sweeping left as I did with the Contis, and that surprises me.

Installers sent me home with 35 psi front 38 rear. Door says 32 all around, and the manual says for +100 mph (I think) 35/42 - but those speeds are rare occasional opportunity bursts, not sustained, so I'm not concerned there.

I've left the pressure as is for now, and of course I can and will tweak tire pressure till I find what I like but I wonder - do I want to firm up the sidewalls with more pressure to reduce perceived bounce and roll?
Appreciate 0
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