I had a set of 12mm HR Spacer with longer lugs laying around from my 335.. I put them on my M6 to clean up the look and improve handling.. I know some people just put them on the front to diminish understeer and others use them to make aftermarket wheels fit right, but Im keeping the stock wheels. I also apply them all around to keep the vehicle dynamics similar and also widen my track.. I noticed a great improved handling feel esp. at high speeds and a much more stable ride not to mention the wheels are now flush with the fenders which looks great....
I am however worried that by putting 12mm all around, I may be stressing the stock suspension and putting stress on bearings and areas where it was not designed.. I was considering dropping down to 10mm all around. Should I really be concerned about this.
Ok Ill get pics.. But the real question is.. Is adding 12mm spacers all around going to cause me problems because im altering the suspension load points...
With stock wheels and tires, the 12mm rear spacers may require you remove material from the inside of the wheelwell. I've been running H&R springs and spacers (12mm front, 10mm rear) on the stock wheels/tires for over 50,000 miles and dozens of track sessions with no problems whatsoever.
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Mike
2006 E60 M5 Silverstone II/Silverstone/Aluminum, All Options, 35% tint, Aluminum Pedals, Valentine V1 and Passport 9500i Hardwired, Blinder Xtreme M40, Michelin PS2's on 20 inch BBS RS-GT's, Winter Pirelli Sottozeros on OEM 19 inch wheels, Resonator Delete, Charcoal Filters Removed, Eibach Springs and Spacers, Active Autowerks ECU, BMC Filters, RPI Air Intakes, Evosport Pulley. Retired from track duty 10/08. Dinan diff replaced with OEM at my cost due to failure at 56,000 miles.
With stock wheels and tires, the 12mm rear spacers may require you remove material from the inside of the wheelwell. I've been running H&R springs and spacers (12mm front, 10mm rear) on the stock wheels/tires for over 50,000 miles and dozens of track sessions with no problems whatsoever.
I am not so sure 2mm makes that big of difference since some of the aftermarket wheels offsets (i.e. HRE) I have seen would push the wheel face out as much as 18mm on the rears and apparently the owners experience no rubbing...
Keep in mind 12.7mm is only 1/2" so 3mm is roughly equal to 1/8" so we are talking less than 1/8" here being the difference between 10mm and 12mm spacers.
Has anyone actually tried a 12mm spacer on the rear and experienced rubbing? This would worry me as the wheels I have coming and my calculations say would equate to the wheel being pushed out 18.35mm.
This was discussed in the thread on tightie's KW's that I guess I kind of jacked (looking back).
For normal driving/safety are concern regarding addtional stress on suspension, I think spacer up to 20mm is safe. Remember vaguely from one of the post from NobleM400
Edit: for tracking purpose, member Cosmos told me to remove spacer for tracking, but didn't explain why, still curious about that too, anyone?
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