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Rule Clarifications
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lansingsportsrage.com



Joined: 26 Jul 2006
Posts: 1078

PostPosted: Thu May 06, 2010 9:34 am    Post subject: Reply with quote

Mopar93 wrote:
Before anyone gets the wrong idea, Patrick is not measuring the offset correctly.

-Maurice


Maurice -- I wasn't posting that for exact measurements or what is right or what is wrong.. only that "stock wheels" have a wide variance in off-sets.
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Mopar93



Joined: 26 Jul 2006
Posts: 938
Location: Charlotte, Michigan

PostPosted: Fri May 07, 2010 8:01 am    Post subject: Reply with quote

Patrick, you have tires mounted and the tires have a wide variance. Your photos and measurements are totally meaningless. You shouldn't have posted them at all. That's why I posted the drawing of the wheel.

-Maurice
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JRJ



Joined: 11 Jul 2009
Posts: 77

PostPosted: Fri May 07, 2010 11:10 am    Post subject: Reply with quote

I agree with Maurice those pic were very miss leading. Maurice the drawing you posted is perfect for this issue.
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NEED mopar



Joined: 04 Apr 2008
Posts: 24
Location: E.R

PostPosted: Fri May 07, 2010 10:27 pm    Post subject: Reply with quote

this thing is getting way out there its not a hard thing to measure from point a to point b when we have a number
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Jim Leasure



Joined: 21 Nov 2006
Posts: 906

PostPosted: Thu May 13, 2010 11:27 am    Post subject: Reply with quote

I have talked to Bill from Diamond wheels to get his view and to see what other wheel options might be available.

There are safety wheels available with 5X100 that are off set 3.5 inches however that would only be 1/2 inch from what most already own so I am suggesting the 3" off set remain the minimum off set.

It really wouldn't matter how we measured the wheel when it is off the car as long as the wheels are all being measure the same way and we have a minimum number to work with. Anything less of course is unacceptable.

Cars that have a smaller than a 5.75 hub may want to consider a support plate as well which adds 3/16th on an inch.

There is no doubt in my mind that a car running the safety wheel and a spacer plate will have a wider wheel base which may equate to a slight advantage in cornering (if) and only if all other factors are equal.

I am convinced that the safety wheel is a good option because of the pressure that is put on the wheel when turning but I am hesitant to mandate the safety wheel because there are some cost associated with the wheel, hub, larger studs etc. Also the fact that if we have someone travel their car may not meet our standards. I also worry about loose wheels on the track or even possibly in the stands.

I am also not comfortable imposing a penalty on a driver for using the safety wheel because it makes economic and safety sense. The cost of a safety wheel is far less costly than the repair on the car when the safety wall is used for stopping the car.

I don't think we have any choice but to allow the safety rims as the rule is written. There is language that refers to a 1/4 tolerance and that 1/4 tolerance is only for the support plate, if one is being used.

This is not a rule change. The safety wheels were talked about last season and at that time it was announced that they were going to be allowed in 2010. The issue now is that there are so many off sets that we have to have a specific standard. The safety wheels are not required, they are optional but I think the term safety says it all. If we see stock rims break in the weeks to come then safety wheels will become a requirement.
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