Percent Difference Calculation Help

yavuz · 05-23-2009, 06:29 PM

Hey all,

I'm having a little bit of trouble deciding whether or not it is safe to buy tires and wheels with the measurements below:

Front:19x8.5 245/35 ZR 19 Offset = 35
Rear: 19x9.5 265/35 ZR 19 Offset = 20

When I enter these measurements into the tire offset calculator, the percent difference comes up at around 2.14 percent. Is this number unsafe (supposedly 1 percent is the limit) for an all wheel drive vehicle?

Can I get different tires that'll be compatible with an all wheel drive vehicle that will also fit on the wheels I want to purchase? (ie. F:265/35 ZR 19 R:235/40 ZR 19 will those fit on the wheels I wish to purchase?)

Thanks

kq328xi · 05-25-2009, 11:32 AM

Quote:

Originally Posted by yavuz

Hey all,

I'm having a little bit of trouble deciding whether or not it is safe to buy tires and wheels with the measurements below:

Front:19x8.5 245/35 ZR 19 Offset = 35
Rear: 19x9.5 265/35 ZR 19 Offset = 20

...

Can I get different tires that'll be compatible with an all wheel drive vehicle that will also fit on the wheels I want to purchase? (ie. F:265/35 ZR 19 R:235/40 ZR 19 will those fit on the wheels I wish to purchase?)

Thanks

That's an aggressive rear offset (+20) but you prob can get it to fit with a fender roll and a tire with curved cross-sectional profile.

For F:235/40-19 and R:265/35-19 the diameters are 26.4" and 26.3" resp., which should be fine. Your speedo will be off by 5%, but, meh.

Let's see pics when they're on

yeung330xi · 05-25-2009, 01:22 PM

most people with xi run 265 30 19 in the rear

JaysBlueE92 · 05-26-2009, 03:04 PM

Quote:

Originally Posted by yeung330xi

most people with xi run 265 30 19 in the rear

halB · 05-26-2009, 03:08 PM

275/30-19 in the rear is a closer match for 235/35-19 at the front, if you can find the right offset and tires to avoid rubbing.

05-23-2009, 06:29 PM	#1
yavuz Staff General 9 Rep 158 Posts Drives: 09 E92 335xi, f10 m5 Join Date: Jan 2009 Location: North NJ iTrader: (1)	Percent Difference Calculation Help Hey all, I'm having a little bit of trouble deciding whether or not it is safe to buy tires and wheels with the measurements below: Front:19x8.5 245/35 ZR 19 Offset = 35 Rear: 19x9.5 265/35 ZR 19 Offset = 20 When I enter these measurements into the tire offset calculator, the percent difference comes up at around 2.14 percent. Is this number unsafe (supposedly 1 percent is the limit) for an all wheel drive vehicle? Can I get different tires that'll be compatible with an all wheel drive vehicle that will also fit on the wheels I want to purchase? (ie. F:265/35 ZR 19 R:235/40 ZR 19 will those fit on the wheels I wish to purchase?) Thanks
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05-25-2009, 01:22 PM	#3
yeung330xi Jordan aka The GOAT 95 Rep 477 Posts Drives: 2006 330XI Join Date: Jan 2006 Location: Ontario, Canada iTrader: (1) Garage List 2014 528i xdrive [0.00]	most people with xi run 265 30 19 in the rear __________________ December 2002\|\| 2003 330xi Steel Grey\Premium Package\CD Changer\Harman Kardon\Rain Sensor\Automatic March 2006 \|\| 2006 330xi Black Sapphire\Automatic\20% TINT\Blacklines\CF Splitters\M3 style spoiler\MFD LED Angel Eye Kit\19" CSL reps with Falken 452\
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05-26-2009, 03:08 PM	#5
halB Colonel 53 Rep 2,384 Posts Drives: W211 E350 4M MkV GTI 987.2 S Join Date: Jan 2007 Location: Just north of Toronto iTrader: (0)	275/30-19 in the rear is a closer match for 235/35-19 at the front, if you can find the right offset and tires to avoid rubbing. __________________ 07 E93 335i - Returned at lease end 09 W211 E350 4Matic Avant Garde - Blk/Blk, AMG pkg w/18". Sport Susp. F1 Asym. Debadged. 09 MkV GTI w/Leather & 18" Huffs. F1 Asym 10 987.2 S w/Leather sport seat, Sport Chrono, 19" Carrera S II wheels
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