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So my C450 that I own (not leased) has 13000 miles and just like most people, need to replace the crappy front Continental run flat tires since it is almost bald. The problem is the rear tires are still in pretty decent shape I think. See attached pics. Question for you guys is, should I save the money and spend about $600 to replace just the front set that will probably last another 13000 miles (which I think will probably match whatever life the back tire has remaining) OR is it worth it to spend $1100 to switch all 4 tires to the Michelin 4S ?
By the way, Costco is having special deals of $130 back on a set of 4 Michelin tires.
Was in the same boat as you. I ended up swapping out the fronts for AS3's and leaving the Conti RF's in the rear. Given the tread life on the rears, even though I don't like the RF's, it felt plain wasteful to get rid of them. Can't go wrong either way...all comes down to when you want to shell out the cash.
Yeah that is my problem now. Even though we all hate the Continental run flat and would love to change all 4 now but I feel it is kind of wasteful given the rear tires are still decent.
Swap them all out the ride will be so much better. Sell the 2 rears to someone who needs a set for lease return. Win win, you don’t waste the tires , get the full benefit of a non run flat experience and get some of the cash to offset what you shelled out for 4 new PS4’s. The flip side is someone gets a deal on over priced sh#tty run flats to use when they give back their lease.
those fronts were over inflated, you definitely would have gotten a bit more life out of them at a lower PSI
Originally Posted by CFG
Nope, the sizes are staggered front to back.
I wonder if if he ran 40 or more psi up front? The gas cap gives non runflat and run flat psi....
FWIW, I had the most tolerable ride at 36-37psi on my RF's and they had a disproportional amount of center wear similar to the photo above, though I didn't push mine that far.
FWIW, I had the most tolerable ride at 36-37psi on my RF's and they had a disproportional amount of center wear similar to the photo above, though I didn't push mine that far.
I think specifying if that was operating temp or cold would be helpful. If that were cold then you probably got up to near ~40 PSI warm. The dealer would repetitively put 41-42 PSI in the OEM tires after having my vehicle serviced.
I think specifying if that was operating temp or cold would be helpful. If that were cold then you probably got up to near ~40 PSI warm. The dealer would repetitively put 41-42 PSI in the OEM tires after having my vehicle serviced.
Operating temps were 37-38psi per Assyst menu. Very rarely used my actual tire pressure gauge, so I suppose there could be a slight difference.
My dealer has been inflating them to 44 psi when hot so it might have cause the premature wear in the front center. In fact, I remember they were around that pressure too when they came from the factory. But for the last few months, I have them at 36 psi hot. I thought these tires are suppose to at 40 psi+ because they are run flat???
2017 AMG C43, AWE Touring, BMC Air Filters- 2015 BMW X3 3.5i (JB1 Equipped)
Originally Posted by skullboy
My dealer has been inflating them to 44 psi when hot so it might have cause the premature wear in the front center. In fact, I remember they were around that pressure too when they came from the factory. But for the last few months, I have them at 36 psi hot. I thought these tires are suppose to at 40 psi+ because they are run flat???
On my C 43 it says 39 Psi all around with 19" rims
So I finally go around to switching out all 4 OEM Continental run-flat last weeks since I have been out of the country and replaced them with a brand new set of Michelin 4S. I am running 39 PSI for all 4 tires on my 19 inch rims. For those of that have switch to non run-flat, do you use the same tire pressure as if they were run-flat ?
So my C450 that I own (not leased) has 13000 miles and just like most people, need to replace the crappy front Continental run flat tires since it is almost bald. The problem is the rear tires are still in pretty decent shape I think. See attached pics. Question for you guys is, should I save the money and spend about $600 to replace just the front set that will probably last another 13000 miles (which I think will probably match whatever life the back tire has remaining) OR is it worth it to spend $1100 to switch all 4 tires to the Michelin 4S ?
By the way, Costco is having special deals of $130 back on a set of 4 Michelin tires.
Since you're in SoCal I say Michelin 4S are a no-brainer. Ride quality and handling will be improved for sure. I run Michelin AS3+ since I'm up in PDX where we have slushy coldness about 4 months of the year.
I wonder if if he ran 40 or more psi up front? The gas cap gives non runflat and run flat psi....
I think that's actually supposed to be pressure cold and unladen and pressure cold and laden with gear and full complement of passengers.
I use the unladen pressure listed on the gas cap, regardless of tire type. Sidewall rigidity has little impact on tire volume when tire sizes are equal. This is for DD. For track use, a completely different set of rules apply and it's best to consult with people who are actively tracking their cars.
I think specifying if that was operating temp or cold would be helpful. If that were cold then you probably got up to near ~40 PSI warm. The dealer would repetitively put 41-42 PSI in the OEM tires after having my vehicle serviced.
My dealer did the same. They'd over-inflate so that the tires would be around 42-44psi cold and close to 50psi hot! So stupid! Last time I bled them in the service bay in front of them, slightly more polite than flipping the bird and telling them they don't know how to do their *** jobs.
BTW, I've finally moved on to a better service center and I do all my tire and wheel stuff at an indy shop that I trust.
05-29-2018, 01:11 PM
