193m to 313m front Spacer question

E90335is · 11-01-2014, 12:14 PM

I recently went from 193m's to 313m's and it feels like I have understeer now. I read a thread some where and I can't find it, mentioning that you need front spacers to help fix this problem. Can someone recommend a front size spacer for me maybe to fix? I was thinking 10mm up front based on some math, but was hoping someone might understand what I'm talking about to. Maybe I'm crazy?

Anyways previous setup was like so; front 18x8 et34 Rears 18x8.5 et37, now I have front 19x8 et37 and rear 19x9 et39.

Thanks for any advise and help.

jwzimm · 11-02-2014, 05:52 PM

I couldn't imagine offset would have a major effect on under/oversteer but I could be wrong. I would think the tires are more related to this. What are your tire specs (brand and sizes).

gigabyte · 11-03-2014, 07:37 AM

try raising the tire pressure in the front first.

cb4 · 11-04-2014, 07:54 PM

Quote:

Originally Posted by gigabyte

try raising the tire pressure in the front first.

Raising pressures in the front would normally cause the front to push even more.

What pressures do you run? What tires and sizes do you have?

Caggs · 11-05-2014, 11:43 PM

I recently made the exact same switch from 193s to 313s on my 11' e90 msport. Once I had new tires and got an alignment it was night and day. Before the tires and alignment my car felt like it was darting all over the place and I had understeer. Now it feels great and I'm not using any spacers.

Went from the OE Bridgestone RFT to Perreli PZero Silver tires. Also had them set my alignment to an aggressive street setting for optimal handling.

11-01-2014, 12:14 PM	#1
E90335is Enlisted Member 38 Rep 46 Posts Drives: 09 E90 335i M Sport Join Date: Aug 2014 Location: MadCity iTrader: (0)	193m to 313m front Spacer question I recently went from 193m's to 313m's and it feels like I have understeer now. I read a thread some where and I can't find it, mentioning that you need front spacers to help fix this problem. Can someone recommend a front size spacer for me maybe to fix? I was thinking 10mm up front based on some math, but was hoping someone might understand what I'm talking about to. Maybe I'm crazy? Anyways previous setup was like so; front 18x8 et34 Rears 18x8.5 et37, now I have front 19x8 et37 and rear 19x9 et39. Thanks for any advise and help.
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11-02-2014, 05:52 PM	#2
jwzimm Colonel 687 Rep 2,770 Posts Drives: '16 M3 Join Date: Jun 2011 Location: Renton, WA iTrader: (17)	I couldn't imagine offset would have a major effect on under/oversteer but I could be wrong. I would think the tires are more related to this. What are your tire specs (brand and sizes). __________________ 2008 Honda S2000 - Current 2016 F80 M3 - SOLD!! 2011 e92 X-Drive Coupe - SOLD!!
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11-03-2014, 07:37 AM	#3
gigabyte what's for lunch? 3 Rep 61 Posts Drives: 08 e90 335i Join Date: Mar 2013 Location: Oakland, CA iTrader: (3)	try raising the tire pressure in the front first.
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11-05-2014, 11:43 PM	#5
Caggs Lieutenant 146 Rep 407 Posts Drives: M2 Competition Join Date: Feb 2013 Location: Collegeville, PA iTrader: (5)	I recently made the exact same switch from 193s to 313s on my 11' e90 msport. Once I had new tires and got an alignment it was night and day. Before the tires and alignment my car felt like it was darting all over the place and I had understeer. Now it feels great and I'm not using any spacers. Went from the OE Bridgestone RFT to Perreli PZero Silver tires. Also had them set my alignment to an aggressive street setting for optimal handling. __________________ Josh Caggs / @M2C.Caggs on Instagram BSM M2Competition / MPerformance Coilover Kit Akrapovik Full Exhaust System (Mid & Rear) BBS FI-R Platinum Gloss w/ Michelin Cup2s Eventuri Carbon Fibber Intake
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