Widest tire on stock R16"s for S430 (w220)?
Has anyone calculated the widest or fattest (not "fastest") tire I can put on the stock R16 rims for an S430 (w220) without rubbing? I would like to try the 255/50/16. It looks like the ratio formula doesn't change the stock total diameter too much (stock total is 26.63" and would be going to a 26.04").
Any help, opinions, suggestions even yellings would be appreciated.
Klugey1
I've been doing quite a bit of research on Tires, and decided that the Yokohama's Avid V4s would be the best move. Some idiot at BigO talked me in to some Falkens at 17K about 2 years ago (so who is the real idiot here?). These Falkens lasted 16K and are now bald, so I want some "fat" tires that have excellent grip. I live in San Diego, so weather is a non-issue.
The guy at Discount Tire just put some 245/50 R16 Yokohama YK420 96V rated tires on, and so far they seem to handle corners extremely well. The stock size is 225/60 R16, so I've gone wider and a little lower profile. I just wanted to ask if anyone foresees any problems with this configuration before I've driven more than 200 miles on them. Thanks in advance!
Has anyone calculated the widest or fattest (not "fastest") tire I can put on the stock R16 rims for an S430 (w220) without rubbing? I would like to try the 255/50/16. It looks like the ratio formula doesn't change the stock total diameter too much (stock total is 26.63" and would be going to a 26.04").
Any help, opinions, suggestions even yellings would be appreciated.
Klugey1
Drive ONE rear wheel on a 6-7 inch higher pedestal (or the curb). This is the maximum the rear wheel will move towards the fendors, (air matic in standard). Then have someone sit in the trunck and measure the distances to the fendor, the bumper, and the metal latch, the bumper is attached to the fendor. Then you know how much more the new tire can stick out w/o rolling the fendors and cutting the bumper plastics to give room. So for example if you measure 10 mm would still let the wheel run freely the tire could be 20mm wider than the one you have. (10mm each side, makes 20mm). Then you have to calculate the diameter or circumference to keep the odometer in tolerance. Generally diameter should not change much, because if it gets bigger the room between fendor and tire may decrease again. My guess is that you can go as far as 275/50 16" tires. The question is here whether or not the stock rims can safely take a 275mm tire, because they are only 7.5" which are 190mm, so the tire would "baloon out" 42 mm 1.67" each side.
Last edited by bamberger_1; Jan 17, 2006 at 07:27 AM.
Do you think this is because of the extra 20 MM of tire width over the stock 225/60/16's that I had on there before? Or is this just because these Yoko tires are softer (v rated) than my old H rated tires?
I like the way it feels so far, but is there any risk or downside to the extra "balooning" over the rims. If it is a 7.5" rim, then I calculated that the total width of the tire is about 9.5" (stock is 225 or 8.86"). So it looks like it is "balooning" about an inch on each side of the rim instead of about 1/2" using standard tire size.
In a nutshell, do you foresee any problems or issues that can arise from this? Should I keep a little axtra PSI in the tires or anything like that?
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