nas2344

whats everyone's feedback on these? has anyone switched them out for a non run flat tire, im wondering since i've got the lowered amg suspension on 19 inch tires. would a regular all season tire provide a plusher ride?

ua549

Non run flat tires provide a marginally softer ride due to sidewall differences. That said if you do make the switch be sure to make provisions for a flat tire.

c4004matic

The Pirellis are excellent all around tires. Not the ultimate tire in any particular parameter but still excellent all around. As runflats they are a little harsh on broken pavement but that's it. They are quiet, handle great and offer an excellent comfort/ performance compromise. You can only see any king of grip limitation on true racing conditions. For the road you will never get to its limits. When mine wear out I will probably replace them with the new michelin pilot supersports only because I do occasionally track the car and those are even grippier.

ua549

I have Pirelli Cinturato P7's in 245x45/18 run flats on my E300 (town car) as specified in my order contract. My BMW (highway car) has Michelin Pilot Sport A/S 3+ in the same size but non run flats. The Michelins wear out very fast. I got 5k miles on a set that was replaced by Michelin at no cost. The current set will be worn out by 20k miles. I won't buy Michelin tires again even though I've used them without issue for 50 years. They don't build them like they used to.

c4004matic

PSS do have a short life, its a factor of their adhesion. 5k sounds a little short unles they got raced or alignment was off. In my hands they usually lasted about 12-15k. The new version 4+ are rated the same as the OEM Pzero that came with my e43 (300). Michelin claims 20% longer life.

gfmohn

Just yesterday I replaced my 17" Pirelli run-flats with 17" Michelin Premier A/S's on my C300 (W205). (The car in my Signature below is my first Mercedes, a 2007 C280 (W203).) The new tires seem slightly better on the few rough surfaces and tar strips I have encountered in the last 24 hours.on C300 (W205) There was one double-track railroad crossing that is rough enough to cause me to slow down below 30 mph. That seemed smoother. Turn-in, a feeling of more direct steering contact, is substantially better. (The Pirellis's were really numb.)

Bear in mind that 17" tires have full sidewall height, so I have not shared the bitterness about the ride of run-flats that I have encountered in the W205 forums. I have not had any broken or bent wheels either. This is at least partly, because the Pirelli's (and a couple other models of so-called run-flat tires) are technically not run-flats. These "run-flat lite" tires are designated "Mercedes Original Extended" ("MOExtended" or "MOE"). According to Tire Rack, "However, since they don't meet all of the International Organization for Standardization (ISO) run-flat tire operating limits under all permitted vehicle loads, they cannot be branded as run-flat tires. ... [Mercedes has] collaborated with several tire manufacturers to develop lighter-duty temporary extended mobility tires that [enhance] vehicle fuel economy and everyday ride comfort." Tire Tech: Mercedes-Benz Original Extended Tires (MOExtended or MOE) So I did not expect the new tires to make a great difference.

ua549

The tires Michelin replaced under warranty at 5k miles were Pilot Sport A/S that had a 40k mile wear guarantee. The BMW was never raced or wrecked and had perfect alignment (per BMW annual service). The car was used for town driving with a single interstate highway trip of 1500 miles. Michelin must have made some serious compound changes from the A/S to the A/S 3+ to go from a 40k wear warranty to no warranty.

riamga

gfmohn

UPDATE on the new Michelin Premier A/S's that I described in my post of 6/19/18: I finally got to drive on my most hated local road. It is a narrow, winding, slightly hilly road that has been patched so endlessly that it is scheduled to be completely repaved later this summer. Where it is not patched, heavy trucks have pushed the asphalt into waves. The difference is not dramatic, but now I don't have to slow down when my wife is with me. The vibration over patched surfaces like this is now more like a distant rumble. Best of all, I can now feel the road! Steering inputs are instant, and, perhaps because of less vibration from the broken surfaces, I can feel steering pressure changes from the road back up through the steering. Before these tires, I considered my C300 to be a family sedan, not a sport sedan. I liked TRAVELING in it, but did not enjoy DRIVING it. Now I enjoy DRIVING it! I guess that is a dramatic difference, after all. (I don't know where the underling of random words comes from. I can't fix it.)

c4004matic

Absolutely true. When fully inflated they gain "give" when inflated atlower levels you ride on the sidewall support thus more jarring.