Still incorrect...
What you quoted was for the E60's that is NOT out yet. I have a E39 M5 but of course, I would love to get a E60 M5 soon.... standard tires that come with 02 X5 3.0 with SP were not the diamaris.. they were Michelin Radials 255 in 18's and all the guys include MD, Supergreg and KewlX5 can chime in on this...listing the tires that come with the 4.8 is well.. just a little different... the M3 wheels are 19's and they are forged... BMW upgrade from the standard 18's wheels. Both KewlX5, Jude and I have the 19's... and yes I went through 3 sets of tires on that car with the last being the aforementioned tires. Again according to the laws of physics/thermodynamics, friction is what causes heat. The lifting of epoxy based paint or anything else for that matter is really where the propensity for the paint to stick to the tire is > than that to stick to the ground.
on your point about speed rating, when are you going to be at a 100% load of the tire at speed??? W rated tires as shown in the chart has been tested good up to 85% load as per DOT rating system which is what most passenger vehicles will be (unless you got a bunch of 400lbs guys sitting in your car)
You talking about two completed different variables in the last exchange. Heat vs load. Again... heat is generated by friction. Limit of the tire is per the temperature rating of the tire.
Quote:
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Originally Posted by RealShakaZulu
Well then we better contact...
BMW HQ
"Every last detail of the BMW M5 represents a fusion of sports strength and modern elegance. The exclusive 19-inch wheels , with their M radial spoke design, emphasise the dynamic good looks of the automobile by drawing attention to its short overhangs. High-speed tyres are the ideal equipment for breathtaking driving dynamics as they are the point of contact between the immense power of the M5 and the open road.
BMW USA
M3 Wheels
Tire dimensions (performance tires) - front 1 225/45R-18
Tire dimensions (performance tires) - rear 1 255/40R-18
Wheel dimensions - front/rear 18 x 8.0/18 x 9.0
Material Light Cast Alloy
TireRack
2005 BMW M3 Coupe OEM Tire = Michelin Pilot Sport
Front: 225/45ZR18
2005 BMW X5 OEM Tire = Michelin 4X4 Diamaris (hey just like mine)
Rear: 315/35WR20
Pirelli
W is rated for 149 MPH at 100% Load
and the manufacturer's testing labs
"Speed ratings are based on laboratory tests where the tire is pressed against a large diameter metal drum to reflect its appropriate load, and run at ever increasing speeds (in 6.2 mph steps in 10 minute increments) until the tire's required speed has been met" (no mention of friction)
for we have lot of misinformation. |