Let the Wheel/Tire search begin!
I've decided to go with 20" rims, but that's the extwnt of it. I'm concerned with the tire size affecting the ride.
I've also observed that ClayJ is quite the tire enthusiast. So, I asked him questions about tires privately, but have decided that some of you might benefit from his answers. Of course, if you have an opinion on the matter, please join in.
My question had to do with what tire profile size would be good so as to not deteriorate ride quality. Here was his answer:
If you 'plus-size' correctly - maintaining the exact same (within .4") Overall Diameter - you will end up with a tire whose amount of sidewall is not too little, and whose slightly additional width (10mm-20mm, or 1/2" to 1") will help to mitigate roadshock or roughness of ride.
I do not like to go below a profile of 45 on a passenger car - a 40 being absolute minimum, and exhibiting a noticeable decrease in ride comfort.
I prefer the Michelin Pilot Sport 2's - admittedly an enthusiast's tire - for best level of both comfort and performance. The Bridgestone S03 is my next choice -- but these ride just a little bit stiffer than the PS2's. Some are recommending the new Goodyear GSD3 -- I have yet to fit a set. These are all more performance than comfort or touring tires, but they are all actually quite comfortable even with being performance tires.
If you live in an area with either some snow or lots of rain, then the Pirelli PZero Nero M&S and the Michelin Pilot A/S are both high performance, high comfort tires - and would both be very good choices over a touring tire if fitment in your desired size on the S550 is available. Both of these tires also exhibit long treadwear life.
If you can get a touring tire from Michelin in 20", and you do not alter your OD in the plus-sizing, you should not experience any appreciable degradation in ride quality. Michelin touring tires are the most comfortable out there in my experience.
If I were you I would post exactly this question to Luke on the Tirerack Tires and Wheels forum and see what his recommendation to you is, as I haven't yet looked at what the fitment options will be for me on my upcoming S65's (and don't know off the top of my head what fitments are available for an S550).
If a 45 in a 20" application keeps overall diameter the same that would be perfect IMO. In fact, that is probably exactly what I would do. You might even be able to go with as low as a 40 with the new S's suspension and a good quality tire without any appreciable loss of ride comfort. That's my opinion.
If you look at all the top end show cars at SEMA, they all run with nothing less than 20", and many even with 22" fitments with the 30/25 series tries. Higher profile tires will protect your rims obviously, but look pedestrian and too conservative - at least to me. If you go with top of the line forged rims and drive carefully, there shouldn't be a problem unless you hit something. In other words, if you want comfort, well, then you sacrifice the look, IMHO. I'm too young to sacrifice style for comfort. If I wanted a ride for pure comfort, I would be buying a cushy caddy. The Benz, even with upgraded rims/tires, is still good enough for me in the comfort dept.
Last edited by CLFREAK; Mar 13, 2006 at 03:51 AM.
I've decided to go with 20" rims, but that's the extwnt of it. I'm concerned with the tire size affecting the ride.
I've also observed that ClayJ is quite the tire enthusiast. So, I asked him questions about tires privately, but have decided that some of you might benefit from his answers. Of course, if you have an opinion on the matter, please join in.
My question had to do with what tire profile size would be good so as to not deteriorate ride quality. Here was his answer:
If you 'plus-size' correctly - maintaining the exact same (within .4") Overall Diameter - you will end up with a tire whose amount of sidewall is not too little, and whose slightly additional width (10mm-20mm, or 1/2" to 1") will help to mitigate roadshock or roughness of ride.
I do not like to go below a profile of 45 on a passenger car - a 40 being absolute minimum, and exhibiting a noticeable decrease in ride comfort.
I prefer the Michelin Pilot Sport 2's - admittedly an enthusiast's tire - for best level of both comfort and performance. The Bridgestone S03 is my next choice -- but these ride just a little bit stiffer than the PS2's. Some are recommending the new Goodyear GSD3 -- I have yet to fit a set. These are all more performance than comfort or touring tires, but they are all actually quite comfortable even with being performance tires.
If you live in an area with either some snow or lots of rain, then the Pirelli PZero Nero M&S and the Michelin Pilot A/S are both high performance, high comfort tires - and would both be very good choices over a touring tire if fitment in your desired size on the S550 is available. Both of these tires also exhibit long treadwear life.
If you can get a touring tire from Michelin in 20", and you do not alter your OD in the plus-sizing, you should not experience any appreciable degradation in ride quality. Michelin touring tires are the most comfortable out there in my experience.
If I were you I would post exactly this question to Luke on the Tirerack Tires and Wheels forum and see what his recommendation to you is, as I haven't yet looked at what the fitment options will be for me on my upcoming S65's (and don't know off the top of my head what fitments are available for an S550).
If a 45 in a 20" application keeps overall diameter the same that would be perfect IMO. In fact, that is probably exactly what I would do. You might even be able to go with as low as a 40 with the new S's suspension and a good quality tire without any appreciable loss of ride comfort. That's my opinion.
I think 40 would be fine, but 35 would be pushing it for me. Plus, I do want to preserve a nice exec M-B ride.
Last edited by Jayhawk; Mar 13, 2006 at 04:52 PM.
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