My apologies, point well taken.
The wheels are AMG, PART NUMBERS:
FRONT: 18X8.5, 44 OFFSET
REAR: 18X9.5, 46 OFFSET
I would like to mount the following tire sizes:
Maybe I can get some better info/confirmation on this now???!!!
- Any suggestions for good spacer brand?
- I was going to measure how far the bolts stick out of the backside on my stock 16" inch rims and have exactly the same distance from the back end of the spacer for new bolts.
This should ensure that there will be no additional bolt length affecting the parking brake, ........ AGREE????
Thanks in advance and once again, SORRY.
Thanks for the additional info.
In reverse order, I think you can fit 275/35-18 in the back and that is nearly perfect for OD to match the front (and stock). The 245/40-18 is the nominal size for your car up front.
In the front you should be good with a 10mm spacer. In the rear I would try for a 20mm as otherwise you're shoving all of the extra tire out and may end up rolling fenders (you might have to do that anyway.
So here is what I'd suggest. Buy the pair of 10mm spacers for the front, then mount both of them on one rear wheel and do a test fit. Then you'll know if 20 is enough. You don't need to drive the car so you only need to buy like 2 bolts of the correct extended length to hold it on securely enough to drop it and bounce it to check for clearance. Be sure to look hard at inner clearance, you may be able to get away with a 15mm spacer (and generally speaking the smaller the better when it comes to spacers.
And yes, your method to calculate your bolt length is correct.
Brands...considering the size of these and the real need for solid quality, I'd pick the H&R. They are pretty expensive, but you know they will fit properly and will be ideally balanced, which is important for this amount of unsprung, rotating mass. You're likely looking at $300, perhaps a bit more, by the time you have spacers and bolts, so it may instead be worth considering selling your S class wheels and buying some from a W211. $300 is a lot of money, so even if you had to buy some that needed refinishing you might end up ahead...and not have to worry about a spacer falling off when you're changing the tire on a cold, rainy night. Murphy does like to follow people around, you know.
Now...if you don't want to go through all of this headache but you want to use your wheels, you can also load up a front and rear and go to a good tire and wheel shop, preferably one that is performance-oriented. Let them advise you on what to do and what will work, because then it's all on them to get it right (and make it right if they are wrong).