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Looking at replacing the tires on my 2021 since the front's and rears are different: fronts are Michelin Pilot Sport SUVs and rears are Michelin Primacy Tour AS. Going to go with Primacy *** when I replace them. Looking at the Tire Rack site and the Primacy Tour *** are marked "MO Mercedes" while the same tires at Discount Tire aren't. Does this mean anything when replacing the tires or is it just a MB marketing thing?
Last edited by rwmorrisonjr69; Mar 4, 2025 at 05:10 PM.
It's worth shopping at your dealer as well. Road hazard is included, and replacement is free including labor if needed.
Often the prices are lower than tire rack.
Looking at replacing the tires on my 2021 since the front's and rears are different: fronts are Michelin Pilot Sport SUVs and rears are Michelin Primacy Tour AS. Going to go with Primacy *** when I replace them. Looking at the Tire Rack site and the Primacy Tour *** are marked "MO Mercedes" while the same tires at Discount Tire aren't. Does this mean anything when replacing the tires or is it just a MB marketing thing?
Marketing and unnecessary to buy MO as it is unnecessary to buy Porsche N marked tires.
MO tires generally have an inner and outer foam sound/vibration absorbing ring. The Porsche version of the same size has one foam ring inside the tire. A tire of the same size without either designation has no foam rings. This is true for Michelin Pilot Sport 4S and likely true for other tires. The rings are not that amazing so any of them will be OK.
MO tires generally have an inner and outer foam sound/vibration absorbing ring. The Porsche version of the same size has one foam ring inside the tire. A tire of the same size without either designation has no foam rings. This is true for Michelin Pilot Sport 4S and likely true for other tires. The rings are not that amazing so any of them will be OK.
Interesting and good to know, I wonder if there is any actual testing on the NVH of the two tires? no performance and safety differences I assume?
I guess if there is not much upcharge going MO versus regular, it might still be worth it? Unless any upcharge isn't worth it because the difference isn't apparent?
a brief check indicates a 72db vs 70db for MO tires (in one size). Supposedly the MO tires are checked more thoroughly for proper runout thus requiring less weight during balancing.
a brief check indicates a 72db vs 70db for MO tires (in one size). Supposedly the MO tires are checked more thoroughly for proper runout thus requiring less weight during balancing.
Cross shop prices here: https://www.mbusatirecenter.com/
Each dealer sets their own prices so the site above helps you easily get those prices from nearby dealers.
I guess if there is not much upcharge going MO versus regular, it might still be worth it? Unless any upcharge isn't worth it because the difference isn't apparent?
Manufacturer specified tires can be slightly or very different from the standard tire. There might be different tire compounds, different tread patterns, etc. The same tire, with the same name can actually be 3,4,5 different tires when considering manufacturer specifications.
Sometimes the manufacturer specified tire is better because they've changed the compound or maybe made the, quieter, but often they might be worse (depending upon your point of view and priorities), as they decrease rolling resistance for fuel economy with the trade-off being tire life.
So, don't think anyone can say if an upcharge is worth it or not as we are often not privy to the changes.
Manufacturer specified tires can be slightly or very different from the standard tire. There might be different tire compounds, different tread patterns, etc. The same tire, with the same name can actually be 3,4,5 different tires when considering manufacturer specifications.
Sometimes the manufacturer specified tire is better because they've changed the compound or maybe made the, quieter, but often they might be worse (depending upon your point of view and priorities), as they decrease rolling resistance for fuel economy with the trade-off being tire life.
So, don't think anyone can say if an upcharge is worth it or not as we are often not privy to the changes.
Fair fair, forum member superswiss explained how different they are, at least when it comes to bmw with their star marked tires (for some reason bmw has star marked tires when it is meant to be a MB symbol... anyways) compared to just regular PS4s tires.
Last edited by W205C43PFL; Mar 5, 2025 at 09:56 AM.
MO tires generally have an inner and outer foam sound/vibration absorbing ring. The Porsche version of the same size has one foam ring inside the tire. A tire of the same size without either designation has no foam rings. This is true for Michelin Pilot Sport 4S and likely true for other tires. The rings are not that amazing so any of them will be OK.
That configuration is called MO-S, with the -S meaning Sound. It's a layer of foam under the tread, and several manufacturers offer that feature now.
Regarding price premium for MO designated tires, it varies, maybe according to US stock.
My last set of MO-1 (AMG spec) winters were significantly cheaper at the dealer, compared to Tire Rack non MO spec.
My last set of Conti 21's was cheaper than non spec tires at Discount last Spring.
Go figure.
Quotes from my local dealers and TireRack (two fronts only):
MB of Memphis: $1,020*
MB of Collierville: $987*
Tire Rack (with tax & installation): $860
*Dealers are pretax and shop fees.
TireRack looks like the best deal right now.
Yes, it varies by dealer, and it will probably be different next week. It's not a standardized price, and it takes some shopping to get the best price.
Remember that the Dealer provides free road hazard, and labor in most cases.
Yes, it varies by dealer, and it will probably be different next week. It's not a standardized price, and it takes some shopping to get the best price.
Remember that the Dealer provides free road hazard, and labor in most cases.
Yes, it varies by dealer, and it will probably be different next week. It's not a standardized price, and it takes some shopping to get the best price.
Remember that the Dealer provides free road hazard, and labor in most cases.
Included road hazard from dealer is typically no more than a year (I think you can pay more for longer).
Costco covers you for 5 years or until the tire is 2/32 of an inch tread depth. https://tires.costco.com/RoadHazardW...ons?lang=en-US
If you don't track your car, those two or three letters are going to cost you!
Included road hazard from dealer is typically no more than a year (I think you can pay more for longer).
Costco covers you for 5 years or until the tire is 2/32 of an inch tread depth. https://tires.costco.com/RoadHazardW...ons?lang=en-US
If you don't track your car, those two or three letters are going to cost you!
Unless they're cheaper, which has been the case two thirds of my tire purchases.
Can't explain why. Shop and compare, to coin a phrase.
I'm not sure how long the MB road hazard warranty is. I think it's still Life of Tread though, or same as Costco.
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