M235i feeling loose under load

Silvx · 08-07-2021, 06:16 PM

Hey, new to the forums.
Just bought a 2014 BMW M235i and I love it, however I've noticed under hard acceleration above 100kph (60mph) it feels quite loose and squirelly in the back. The dealer I bought it from did have to replace the rear tires with some cheaper Nexens (never heard of them) as they were too worn. The fronts have Michelin Pilot Super Sports on them. Could this be the cause of that issue?
Just want to find out as it doesn't exactly feel safe.

overcoil · 08-07-2021, 11:12 PM

M opinion you should definitely be running a matched set of tires on all four corners.

It could be the tires.

But a bent or clapped out rear suspension piece can create a squirrelly feeling.

pikcachu · 08-08-2021, 12:27 AM

Quote:

Originally Posted by Silvx

Hey, new to the forums.
Just bought a 2014 BMW M235i and I love it, however I've noticed under hard acceleration above 100kph (60mph) it feels quite loose and squirelly in the back. The dealer I bought it from did have to replace the rear tires with some cheaper Nexens (never heard of them) as they were too worn. The fronts have Michelin Pilot Super Sports on them. Could this be the cause of that issue?
Just want to find out as it doesn't exactly feel safe.

WTF they put different tires ? that's kind of ridiculous ... you should have requested matching tires

WolfGTI · 08-08-2021, 04:45 PM

First off get matching tires, then get the alignment dialed in. Once that's done you can thinking of suspension upgrades if you're not happy.

Silvx · 08-12-2021, 01:21 AM

Turns out it was the tires at fault, took it to my local BMW dealer and they put michelins on and it felt fine. There just wasn't enough sidewall stiffness on those other ones.

08-07-2021, 06:16 PM	#1
Silvx Registered 2 Rep 2 Posts Drives: 2014 BMW M235i Join Date: Aug 2021 Location: NZ iTrader: (0)	M235i feeling loose under load Hey, new to the forums. Just bought a 2014 BMW M235i and I love it, however I've noticed under hard acceleration above 100kph (60mph) it feels quite loose and squirelly in the back. The dealer I bought it from did have to replace the rear tires with some cheaper Nexens (never heard of them) as they were too worn. The fronts have Michelin Pilot Super Sports on them. Could this be the cause of that issue? Just want to find out as it doesn't exactly feel safe.
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08-07-2021, 11:12 PM	#2
overcoil Major General 3074 Rep 5,577 Posts Drives: M235i 6spd Join Date: Dec 2013 Location: Mid-Atlantic iTrader: (0)	M opinion you should definitely be running a matched set of tires on all four corners. It could be the tires. But a bent or clapped out rear suspension piece can create a squirrelly feeling.
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08-08-2021, 04:45 PM	#4
WolfGTI Captain 716 Rep 913 Posts Drives: '17 F22,15 E84 M Sport,02 R53 Join Date: Jul 2007 Location: South NJ iTrader: (0) Garage List 2017 BMW M240i [0.00] 2002 MINI Cooper S [0.00] 2015 BMW X1 [0.00]	First off get matching tires, then get the alignment dialed in. Once that's done you can thinking of suspension upgrades if you're not happy. __________________ Integrated Engineering engine mounts, Dinan CAI, AA catted DP, Remus resonated cat back. Rogue Engineering SSK & transmission mounts, WaveTrac LSD. Ohlins R&T coilovers, Turner monoball thrust arms, F87 LCAs, GC camber plates, Superpro subframe bushings, Megan Racing adj. RCAs, delrin differential bushings. Stoptech BBK 6 piston (f) 4 piston (r).
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08-12-2021, 01:21 AM	#5
Silvx Registered 2 Rep 2 Posts Drives: 2014 BMW M235i Join Date: Aug 2021 Location: NZ iTrader: (0)	Turns out it was the tires at fault, took it to my local BMW dealer and they put michelins on and it felt fine. There just wasn't enough sidewall stiffness on those other ones.
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