Michelin Pilot Sport PS2

31.5 front and 35 rear 225.40.18F and 255.35.18R
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* note this was over a year ago. so they may have fixed the problem by now.
* note this was over a year ago. so they may have fixed the problem by now.
From what I understand that was the VERY EARLY production and the problem was resolved sometime last summer
Sorry I wasn't trying to hijack the tread.
Tire pressure 32psi in front and 34psi in back?? I think.
An old High School buddy works at Michelin product developement in S Carolina and says the drifting problem was actually with the Pilot Sport A/s(built for European roads without a center crown) and was not an issue with the PS2
Here is Michelin's "Official" Response:
"In North America, roads have a slight slope towards the outside of the road built in to evacuate water. Unchecked, this road slope or "road crown" would normally cause a vehicle to pull to the right. Vehicle and tire manufacturers design in a slight left hand pull for North American applications to account for road crown. This characteristic in the tire is known as Residual Aligning Torque.
In original equipment programs, tire manufacturers work with OEM's to achieve the perfect Residual Aligning Torque balance between the tire and vehicles. The OEM specifies the amount of left hand pull for the specific original equipment tire. Replacement tires, on the other hand, are designed to match a broad range of vehicles and therefore employ an "industry average" approach to drift. Depending on the specified drift for the original equipment tire, some vehicles may be more sensitive to alternate, replacement tire fitments. Some Mercedes customers experienced vehicle drift after mounting Pilot Sport A/S tires. This does not reflect an issue
with the tire or its manufacture but points to an application issue - one of matching tire drift to vehicle drift. To accommodate Mercedes customers, we made a very slight modification to the Pilot Sport A/S to increase the level of left pull and eliminate the sensation of drift due to the road crown.
You may view a Mercedes Star Bulletin on Mercedes STAR Tekinfo for a bulletin concerning this issue. This bulletin, states that the Pilot Sport A/S is now approved for Mercedes Vehicles.
If you have additional questions, you may call us at 1-800-847-3435
(toll-free) between
8:30AM and 6:00PM Eastern Time Monday through Friday to allow one of our Consumer Relations Representatives to assist you.
Michelin North America
Consumer Relations Department"
Last edited by NORTH 44 C63; Aug 19, 2005 at 10:00 AM.
Hong Kong has been under heavy rain storm in past days; so I did not want to upgrade the Rosso to PS/2 yet. Incidentally, I saw some PS/2 tires and I guess it is supposed to be ZR but not sure if the letter "Y" (stands for Heavy Load) does matter or not to be on C55 ? Or should I be getting something else ?
cnt
it rained in Taiwan....and now im in HK and its still raining!
cant take the CLS out for a spiN coz mom wont allow!
it rained in Taiwan....and now im in HK and its still raining!
cant take the CLS out for a spiN coz mom wont allow!
I did ride C55 under signal 'yellow rain' on pretty flooded roads, risky but very exciting. Amazing a rear drive car like C55 can perform so well on flooded roads...may be the low rev torque gives good grip even drive slow?
An old High School buddy works at Michelin product developement in S Carolina and says the drifting problem was actually with the Pilot Sport A/s(built for European roads without a center crown) and was not an issue with the PS2
Here is Michelin's "Official" Response:
"In North America, roads have a slight slope towards the outside of the road built in to evacuate water. Unchecked, this road slope or "road crown" would normally cause a vehicle to pull to the right. Vehicle and tire manufacturers design in a slight left hand pull for North American applications to account for road crown. This characteristic in the tire is known as Residual Aligning Torque.
In original equipment programs, tire manufacturers work with OEM's to achieve the perfect Residual Aligning Torque balance between the tire and vehicles. The OEM specifies the amount of left hand pull for the specific original equipment tire. Replacement tires, on the other hand, are designed to match a broad range of vehicles and therefore employ an "industry average" approach to drift. Depending on the specified drift for the original equipment tire, some vehicles may be more sensitive to alternate, replacement tire fitments. Some Mercedes customers experienced vehicle drift after mounting Pilot Sport A/S tires. This does not reflect an issue
with the tire or its manufacture but points to an application issue - one of matching tire drift to vehicle drift. To accommodate Mercedes customers, we made a very slight modification to the Pilot Sport A/S to increase the level of left pull and eliminate the sensation of drift due to the road crown.
You may view a Mercedes Star Bulletin on Mercedes STAR Tekinfo for a bulletin concerning this issue. This bulletin, states that the Pilot Sport A/S is now approved for Mercedes Vehicles.
If you have additional questions, you may call us at 1-800-847-3435
(toll-free) between
8:30AM and 6:00PM Eastern Time Monday through Friday to allow one of our Consumer Relations Representatives to assist you.
Michelin North America
Consumer Relations Department"







Thanks Michelin!
