Can you run diff tires on Front and diff on back?

DaFish · 05-04-2012, 10:17 PM

I have just replaced my rears with Bridgeston pole positions - non rft - 265/30/19s on stock 230s

I need to replace the fronts - because one of them won't balance.

I want to go with Michelin PSS now. (I think)

Either case, the Pole Postion is not sold any more, and I have to go with the new Bridgestone if I want to be close.

QUESTION: what will happen if I have 2 fronts the same, and 2 rears from different vendors - but all non RFT?

I know it probably isn't recommended.... but what will happen to the handling/stability?

e90fun · 05-05-2012, 02:33 AM

Its not "recommended" but realistically you can easily get away with it.

I ran it for several months awhile back and aslong as you have the same tire brand on the same axle you should be fine.

Only place it causes it issue is if your performance driving like on a track or REALLY pushing it curvy roads.

The different tires on the track will cause a difference in handling so the car becomes alittle less predictable.

On a daily driving basis, you wont notice a difference.

rimovp · 05-05-2012, 11:36 AM

Yep, just make sure the tires have the same speed rating. PS2s are very good tires and may give you a little more oversteer feeling with the different tires front and back.

Cheers

Tom K. · 05-05-2012, 12:02 PM

And be very, very careful on wet pavement.

Ton

DaFish · 05-05-2012, 03:51 PM

Thanks guys... I'll go with the PSS's and just burn the F out of the rears... won't be long to replace the rears too.

05-04-2012, 10:17 PM	#1
DaFish Major 159 Rep 1,289 Posts Drives: 2014 435iX, FBO Join Date: Mar 2009 Location: Ontario, Canada iTrader: (0) Garage List 2014 BMW 435i Xdrive [0.00]	Can you run diff tires on Front and diff on back? I have just replaced my rears with Bridgeston pole positions - non rft - 265/30/19s on stock 230s I need to replace the fronts - because one of them won't balance. I want to go with Michelin PSS now. (I think) Either case, the Pole Postion is not sold any more, and I have to go with the new Bridgestone if I want to be close. QUESTION: what will happen if I have 2 fronts the same, and 2 rears from different vendors - but all non RFT? I know it probably isn't recommended.... but what will happen to the handling/stability? __________________ 2020 M2 Competition HS, DCT, 763s, Carbon: splitter, side skirt, grill, diffuser, wing Previous: 2014 BMW F32 435iX - JB4, MHD Flash, BMS Meth Kit, ER Intercooler, intake, catless DPs, KW Streets, 437M Reps with 245/35 and 275/30 Michelin PSS 4S
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05-05-2012, 02:33 AM	#2
e90fun ('''\(;,,,;)/''') 86 Rep 1,682 Posts Drives: AW 335i e90 Join Date: Jul 2009 Location: San Diego, CA / Santa Rosa, CA iTrader: (14)	Its not "recommended" but realistically you can easily get away with it. I ran it for several months awhile back and aslong as you have the same tire brand on the same axle you should be fine. Only place it causes it issue is if your performance driving like on a track or REALLY pushing it curvy roads. The different tires on the track will cause a difference in handling so the car becomes alittle less predictable. On a daily driving basis, you wont notice a difference. __________________ Stock 08` Alpine White E90 335i
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05-05-2012, 11:36 AM	#3
rimovp New Member 0 Rep 10 Posts Drives: 335is Join Date: Dec 2011 Location: Medford, OR iTrader: (0)	Yep, just make sure the tires have the same speed rating. PS2s are very good tires and may give you a little more oversteer feeling with the different tires front and back. Cheers
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05-05-2012, 12:02 PM	#4
Tom K. Major General 125 Rep 5,626 Posts Drives: '07 328iT, '13 Boxster Join Date: Mar 2008 Location: Maryland iTrader: (0)	And be very, very careful on wet pavement. Ton
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05-05-2012, 03:51 PM	#5
DaFish Major 159 Rep 1,289 Posts Drives: 2014 435iX, FBO Join Date: Mar 2009 Location: Ontario, Canada iTrader: (0) Garage List 2014 BMW 435i Xdrive [0.00]	Thanks guys... I'll go with the PSS's and just burn the F out of the rears... won't be long to replace the rears too. __________________ 2020 M2 Competition HS, DCT, 763s, Carbon: splitter, side skirt, grill, diffuser, wing Previous: 2014 BMW F32 435iX - JB4, MHD Flash, BMS Meth Kit, ER Intercooler, intake, catless DPs, KW Streets, 437M Reps with 245/35 and 275/30 Michelin PSS 4S
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