Double check my math..

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John Brown
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Joined: Fri Dec 05, 2003 11:05 am

Double check my math..

Post by John Brown » Tue Feb 13, 2018 8:45 am

Im about to order an extra set of 18 x 12 wheels..
the offset is -15

What is the back spacing?
ETR Pro Class Champion-2002-03-10-11-12-13-14-15 (the last year of SCCA course design rules)
BMW/CCA D-Mod National Road Racing Champion-2011
Pro-Solo Prepared National Champ-2004
Pro-Solo Prepared National Champ-2005
2016 Dodge Challenger SRT 6.4L CAM-C

jcox07
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Joined: Tue Feb 08, 2011 6:40 am

Re: Double check my math..

Post by jcox07 » Tue Feb 13, 2018 8:55 am

Back spacing on that is 5.91
JY ( Jeff ) Cox
2018-2020 Solo Nationals Co Chairman

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John Brown
Posts: 8040
Joined: Fri Dec 05, 2003 11:05 am

Re: Double check my math..

Post by John Brown » Tue Feb 13, 2018 9:09 am

dang.. thats what I was thinking. My 11s have 6.7in BS

but, I run a 15mm spacer.. Maybe if I do away with the spacer.. I can be close..
ETR Pro Class Champion-2002-03-10-11-12-13-14-15 (the last year of SCCA course design rules)
BMW/CCA D-Mod National Road Racing Champion-2011
Pro-Solo Prepared National Champ-2004
Pro-Solo Prepared National Champ-2005
2016 Dodge Challenger SRT 6.4L CAM-C

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