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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > How will 19x8.5, 19x10 effect handling?



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      04-05-2011, 11:45 AM   #1
zeenon53
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How will 19x8.5, 19x10 effect handling?

I've already put an order in for 19x8.5 and 19x10 wheels and I want to make sure that this won't change the way the car handles too much. I'm thinking about going with a 245/35/19 and 275/30/19 tire. Will this create more understeer? Can this be corrected by going to a thicker front sway bar? I don't want to sacrifice any handling because of the wider wheels. I Don't have any plans on lowering the car more than it already is. I have installed the lowering perches in the front and the old BMW performance suspension on my 09 e90 m-sport.
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      04-05-2011, 02:50 PM   #2
psre08
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It will produce noticeable understeer with that size of tire. Even with my 235/265 set up I feel understeer.
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      04-06-2011, 02:34 AM   #3
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I have a 235/265 setup and it does in-fact understeer a small noticeable amount more.
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      04-06-2011, 04:13 AM   #4
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Your not to worry!!
Understeer is caused by the front tires loosing their grip in a turn so by going to a 245 front tire compared to a 225-235 will give you more grip resulting in less understeer and adding the M3 front contkrolarm-kit (http://www.hpashop.com/product.sc?pr...categoryId=175) will ad some negative camber therby decreasing understeer futher.

I run 19" Morr vs8 with non Rft Pirelli P zero 245/35 and 265/30 the setup saves about 40 pounds unsprung weigth so everything is better compared to my 17" Oem rft even comfort is way better

The only negative thing with my set up it has a slight heavy fill around deadcenter (running straight ahead) It could be cause of the wide tires then on the other hand the only criticism of the Pirelli P zero is its steer in feeling, but Im realy netpicking here

Im very pleaced with my set up and its a pleasure to haveem back on again after 4 months on 17" 225 wintertires.
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      04-07-2011, 09:59 AM   #5
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I figured there would be a bit more understeer. Would it make a difference if it was a 19x9 in front instead of the 19x8.5?
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      04-07-2011, 12:04 PM   #6
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Nevermind me! I'm just on the sideline observing feedback! I have a set of 245-35-19/275-30-19 that will be mounted for this Summer.
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