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12th February 2008, 00:09
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#1 (permalink)
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Junior Member, warming up (<31 posts)
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Location: Las Vegas
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Need help with Tire sizes ...
Hey guys I ordered up some new 20" wheels for the M6 and they come in in less then 10 days. Can some one help me with tire sizes?
New wheels are
20x9" Front
20x11.5" Rear
I know stock is 255/40/19 on a 19x9" rim and rear is 285/35/19
so I was thinking 255/35/20 Front and 305/30/20 Rear .... but there is no such size as 305/30/20 that I could find and I was hoping to stay with the PS2s 
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26th February 2008, 07:24
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#2 (permalink)
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m5board.comoholic (>1000 posts)
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It depends on your springs as well...if you want to fill in a nice wheel gap along with a drop, the 255's and 285's have an appropriate sidewall amount to fill in the gap. So the 305's will have a lower section height, but more wheel gap.
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2005 Lotus Elise (track rat! - Ohlins coilovers, Larini SE exhaust, CF side scoops)
2005 E46 M3 (Sold!!! but not forgotten)
2004 Range Rover HSE (gf drives it)
2006 E350 MB (got it for my mama)
1989 E30 (R.I.P.)
M6!!! selling parts:
- Eibach springs
- RPI ram air intakes (Sold)
- BMC filters
- charcoal filter delete
- Vorsteiner lip ($1000)
- Eisenmann Race exhaust ($1800)
- SS X-pipes ($700)
- Angel Eye LED Bright Star upgrade
- Aicona 20's powdercoated black ($4000)
- CF roundels
- CF grills ($300)
- CF lower steering wheel ($200)
(if out of state, you cover shipping)
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26th February 2008, 10:35
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#3 (permalink)
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Member, P400 Sport, DSC On (>550)
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Quote:
Originally Posted by M3This
Hey guys I ordered up some new 20" wheels for the M6 and they come in in less then 10 days. Can some one help me with tire sizes?
New wheels are
20x9" Front
20x11.5" Rear
I know stock is 255/40/19 on a 19x9" rim and rear is 285/35/19
so I was thinking 255/35/20 Front and 305/30/20 Rear .... but there is no such size as 305/30/20 that I could find and I was hoping to stay with the PS2s |
You're gonna have some fatties on the back - please post pics
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"Men wanted for hazardous journey. Small wages. Bitter cold. Long months of winter. Constant danger. Safe return doubtful. Honour and recognition in case of success." - Ernest Shackleton, Ad in London newspaper 1913 for south pole expedition.
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26th February 2008, 21:22
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#4 (permalink)
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Addicted Member (>300 posts)
Join Date: Dec 2007
Location: Chicago
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Use Tirerack.com
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26th February 2008, 22:01
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#5 (permalink)
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Addicted Member (>300 posts)
Join Date: Jan 2008
Location: Fullerton
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Quote:
Originally Posted by M3This
Hey guys I ordered up some new 20" wheels for the M6 and they come in in less then 10 days. Can some one help me with tire sizes?
New wheels are
20x9" Front
20x11.5" Rear
I know stock is 255/40/19 on a 19x9" rim and rear is 285/35/19
so I was thinking 255/35/20 Front and 305/30/20 Rear .... but there is no such size as 305/30/20 that I could find and I was hoping to stay with the PS2s |
Are you sure about the 11.5's for the rear? I was under the impression that any wheel over 10.5's could rub...? I heard this from a couple of wheel venders but not 100% sure. If it works out, a fat rear is always nice. A little junk in the trunk...Yah! 
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27th February 2008, 00:26
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#6 (permalink)
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m5board.comoholic (>1000 posts)
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11 with the most perfect of offsets will be ok, 11.5 sounds a bit big to me.
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"Motion does not equal progress"...Cos
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7th May 2008, 22:58
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#7 (permalink)
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Junior Member, warming up (<31 posts)
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Location: Las Vegas
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The wheels are from 360Forged Im like 90% sure they are 11.5 Rears ... I have 11" rears on my 335i
I ended up with 255/30/20 F and 305/25/20 R 
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8th May 2008, 03:31
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#8 (permalink)
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Member, Sport: On DSC: On (>100 posts)
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Did you get the wheels on? You should check with Jordan @ 360 to see the actual size, because Im sure he would use a 10.5 in the rear.
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GoDs SpEeD!!!!
