can anyone loan me a set of wheel spacers for the bmw race at RA this coming weekend? normally i run sans spacers with my 15" et25 wheels but i’ll probably use my 14" weaves for at least the fri enduro. and if anyone wants to lend a helping hand with the enduro it’d be nice to have a radio helper!
wheel spacers needed
jlevie
#2
Since this is a DE weekend, you can probably find someone from the DE side that would be happy to help out in the pits. Or you can probably team up with one of the neighboring teams.
csrow
#4
Jason,
Although I don’t have any spacers, I’ll be at the track on Friday. Let me know if you need some help.
jtower
#6
appreciate it david, but it turns out i couldn’t get my 14" tires mounted in time so i’m just bringing two sets of 15s. still, i might want to try your spacers on those wheels to see if it makes a detectable difference. i should be there around 1800 or so on thu.
Steve_D
#7
Tower -
It looks like you are all set, but if you want to swing by my house (in Atlanta) you are welcome to use my spacers.
FishMan
#8
I understand that Jason’s request was for spacers with OEM wheels, but his request got me thinking. Please humor my rookie question… With the 25mm offset in the TD wheels that most of us use, do we need wheel spacers? I have not measured my track width, but assume my car to be very near the specified limit. Am I wrong?
What are the effects of increasing your track width? It makes sense to me that increasing the width lengthens the momemt arm relative to the spring/shock and effectively softens the suspension. Applying this thought to tuning would mean that spacers up front slow the responsiveness at turn-in but yield better mid and exit corner traction. Widening with Spacers in the rear should stick the rear better at the expense of traction in the front. Decreasing the width should yield opposite results. Am I thinking aobut this correctly?
jtower
#9
Steve D wrote:
[quote]Tower -
It looks like you are all set, but if you want to swing by my house (in Atlanta) you are welcome to use my spacers.[/quote]
appreciate the offer, probably won’t need them but you never know 
Steve_D
#10
FishMan wrote:
Probably, because I think the track width rule got a little bungled. I believe the specified width was derived using toe plates, but the tech method specified is “rolled through powder” which gives WAAAAY more track width.
I don’t know of anyone exploiting this rule. I didn’t want to change wheels, run a stack of spacers and/or cut down a bunch of sidewalls working this loophole.
Here’s a thread where the topic came up before:
http://spece30.com/component/option,com_kunena/Itemid,94/func,view/id,47343/catid,16/
I believe your take on the effects of spacers is correct. But I am no engineer.