ElastomerGuy

I've got a 2019 S65 AMG. The summer tires are Michelin Pilot Sport 3. The front tires are 2018 manufacture and seem to be pretty hard.. They're also pretty worn out. I'm thinking about replacing them with Michelin Pilot Sport 4S but I've read a lot of good things about the Continental ExtremeContact DWS06 Plus tires. They're actually rated higher than the Michelins on Tire Rack's web site. I'm OK on the fronts, it looks like the Continentals come in the correct size for the front tires. Unfortunately, the Continentals don't come in the correct size for the rears. The recommended sizes is 295/35 ZR20. The closest size for the rear in the Continentals is 295/40 ZR20. There is also a 315/35 ZR20. So, my question is, has anyone run either of these two Continentals on the rear of their W222? Will the 40 profile screw up the speedometer or the computer? Will the wider 315mm, roughly 3/4" wider tread width on the 315mm wide tire, fit OK without rubbing. That's about 3/8" on the inside and outside of the rim. Anyway, any guidance would be appreciated.

superswiss

The DWS is an all-season performance tire and the PS4S is an ultra-ultra high performance summer tire. Not sure in what regard they are rated higher, but this is an apples to oranges comparison. Either you want a dedicated summer max performance tire or you want an all-season performance tire. For normal driving the PS4S won't necessarily give you more performance, but if you start hooning it and the compound gets real hot, the PS4S will take the lead. On the other hand you'll get a longer tread life out of the DWS06, because it has a harder all-season compound.

carlosinseattle

I think there might be some confusion about PS4's vs PS4 AS tires. The PS4's are awesome tires, as are the PS4 AS tires. The continental DWS06 Plus are nice, and I absolutely LOVED them, wish I could have a set of 4 on my S63, but they don't make them in the right size for the rears. As far as rubbing or creating clearence issues by going with a wider rear tire, I can't speak to that. But since I've run PS4's, PS4 AS, and Cont DWS06+, I can tell you that it's better to go with the right size tire than sacrifice potential problems for any perceived benefit of one tire over the next. All 3 are fantastic choices! I like the DWS06+ better because they are slightly quieter and I can gind them on sale. The Michelin's never really go on sale, so the only time you can save some coin is when they offer a manufacturer's rebate, usually in the Summer and right before Christmas.

As far as only replacing 2; I think you "can" do that, but get your tread depths checked first. I think all these tires come with 8/32 tread depth, so if you're 4/32 or better you should be fine. I usually go with a set of 4, currently running a summer and winter set because I live in rainy Seattle. Summer tires aren't good for temps below 40 degrees farenheit so that's another reason I run the AS tires in the winter and summer in the warmer weather. The climate the OP lives in might not make this relevant.

Quadrobenz

I currently have two S65's and an SL65. The W222 S65 originally had Conti5P's. I replaced them with Michelin PS4s tires in stock sizes, 255/40-20 and 285/35-20. The Michelins are far superior in every way. Most importantly, they eliminated the constant intervention of traction control in everyday driving caused by the poor straightline traction of the Conti's. I have never used all season tires on any of our AMG's so cannot comment on them. My A217 (Cabriolet) S65 also has Michelin PS4s tires.
On the SL65, even with the factory limited slip differential, traction control was a constant annoyance, again, the factory tires were Conti 5P's. I had them removed and put on the PS4s tires. The stock sizes were 255/35-19 and 285/30-20. We used 295/30-20 on the rear. It was done by the dealer since they had the 295's in stock. They are the standard rear tires on the E63s. It is still easy to break the rear wheels loose but no more traction control intervention. The car is much faster at low speeds with the bigger stickier tires. I could have fit 305's but they would have had to be 305/25-20's and I did not want to do that.
It looks to me like a 295/35-20 will fit on the rear of the S65, it will not cause any "computer" issues. A 305 would have to be a 30 series tire and a 315 would likely require a wheel spacer and be a 25 series tire if it will fit at all. A 295/40-20 makes no sense, it is way bigger than stock, not sure it would fit, and the rolling circumference is much larger than stock.

PatPend

Michelins are better in cold temps than Contis. Contis will crab in the cold.

themotts

When I have used up the michelins on my 17 S63 I will be going to Conti dws06 on fronts and Michelin Sport 4 a/s on rear, I have used Conti on S an SL and like them a lot. I believe this is the best combo and I'm not concerned about matching brands its about my experience driving. usually just cold and light snow here, if it's going to snow a lot I'm driving the GL and not S63 anyways.