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Related Categories: Speed Rating Letters | Speed Ratings Explained | Lower Speed Rating | Speed Rating | H Speed Rating | Speed Calculator | Rating Chart | What Does Z Mean On The Tires | Z Speed Rating | Load Index

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Tire Tech Information - How to Read Speed Rating, Load Index & Service Descriptions


…tire's load index and speed rating. Service Descriptions are required on all speed rated (except for Z-speed rated) tires manufactured since 1991. The first two digits (87S) represent the tire's load index and are followed by a single letter (87S) identifying the tire's speed rating. Load Index P195/60R15…

Related Products: Speed Ratings Explained | Speed Rating Letters | Speed Rating
 

What's in a letter?


…stone up to a (Y) rated tire. Wait a minute!!! Y is higher than Z?? Yes it is! As you can see from the chart on this page, the speed rating letters don't exactly follow the alphabet. With certain vehicles now capable of running well over 150 mph, the need for higher speed ratings was necessary. Now…

Related Products: What Does Z Mean On The Tires | Z Speed Rating | Lower Speed Rating
 

How Does Speed Rating Affect My Tire Choice?


…increase in top speed. Albeit some letters are missing (e.g. U) and not necessarily in alphabetical order, the chart does outline what ratings are appropriate for vehicles. It's important to note that some of the vehicle manufacturers sometimes specify a tire has a higher speed rating than necessary.…

Related Products: Lower Speed Rating | H Speed Rating | Honda Accord
 

Tire Tech - Air Pressure/Load Adjustment for High Speed Driving H-Speed


…branded on the tire's sidewall. Back to Tech Article Additional Speed Rating Charts R-Speed S-Speed T-Speed U-Speed H-Speed Z-Speed V-Speed W-Speed Y-Speed Home > Tires > Tech > Air Pressure/Load Adjustment for High Speed Driving H-Speed JOIN US GET OUR EMAILS Want to stay on the inside track? Sign up…

Related Products: High Speed Driving | H Speed Rating | Tire Pressure Chart
 

Tire Tech Information - Tire Size Conversion Chart


…Return Flat Tire Repairs Effect on Speed Rating Flat-Spotted Tires (Due to Brake Lockup/Slide) Flat-Spotted Tires (Due to Parking/Storage) Government Tire Approval Marks How Do I Compare Price vs. Value? How to Install Your Tire & Wheel Package How to Read Speed Rating, Load Index & Service Descriptions…

Related Products: Tire Psi Chart | Tire Size Equivalent Calculator | Size Calculator
 

Tire Test Results : Finding the "Ultra" in Ultra High Performance All-Season Tires


…Finding the "Ultra" in Ultra High Performance All-Season Tires * Test Report * Test Result Charts * Spider Charts * Test Result Video July 26, 2010 Tires tested: Dunlop SP Sport Signature (W- or Y-Speed Rated) (Ultra High Performance All-Season 225/45R17 94W) * What We Liked: Great traction and short…

Related Products: 225 45r17 Run Flat | Best Z Rated Tires | Run Flat Tires For Bmw 328i
 

Tire Tech Information - Air Pressure/Load Adjustment for High Speed Driving


…order to surpass high speed driving stresses. In order to accomplish this, the tire inflation pressure recommendations and the tire's rated load capacities are customized when speeds exceed 160 km/h (99 mph) for all tires up to and including a V-speed rating, and when speeds exceed 190 km/h (118 mph…

Related Products: Trailer Tire Load Range Chart | 835 | 91w
 

Tire Tech Information - Vibration Diagnosis Flow Chart


…Return Flat Tire Repairs Effect on Speed Rating Flat-Spotted Tires (Due to Brake Lockup/Slide) Flat-Spotted Tires (Due to Parking/Storage) Government Tire Approval Marks How Do I Compare Price vs. Value? How to Install Your Tire & Wheel Package How to Read Speed Rating, Load Index & Service Descriptions…

Related Products: Vibration | Inflation Chart | New Tire Vibration
 

Tire Tech Information - Contact Patch


…Return Flat Tire Repairs Effect on Speed Rating Flat-Spotted Tires (Due to Brake Lockup/Slide) Flat-Spotted Tires (Due to Parking/Storage) Government Tire Approval Marks How Do I Compare Price vs. Value? How to Install Your Tire & Wheel Package How to Read Speed Rating, Load Index & Service Descriptions…

Related Products: Low Profile Tire Pressure | Contact Patch | Aspect Ratio
 

Tire Tech Information - Light Truck Fitment Formula


…Return Flat Tire Repairs Effect on Speed Rating Flat-Spotted Tires (Due to Brake Lockup/Slide) Flat-Spotted Tires (Due to Parking/Storage) Government Tire Approval Marks How Do I Compare Price vs. Value? How to Install Your Tire & Wheel Package How to Read Speed Rating, Load Index & Service Descriptions…

Related Products: Passenger Tires Vs Light Truck Tires | Light Truck Tire Conversion | Changing Tire Sizes
 

Tire Tech Information - Manufacturer Tire Aging / Service Life Bulletins


…Return Flat Tire Repairs Effect on Speed Rating Flat-Spotted Tires (Due to Brake Lockup/Slide) Flat-Spotted Tires (Due to Parking/Storage) Government Tire Approval Marks How Do I Compare Price vs. Value? How to Install Your Tire & Wheel Package How to Read Speed Rating, Load Index & Service Descriptions…

Related Products: Maximum Tire Age | Ozone Cracking | Passenger Tires Vs Light Truck Tires
 

Tire Tech Information - Care and Feeding of the ContiForceContact


…Return Flat Tire Repairs Effect on Speed Rating Flat-Spotted Tires (Due to Brake Lockup/Slide) Flat-Spotted Tires (Due to Parking/Storage) Government Tire Approval Marks How Do I Compare Price vs. Value? How to Install Your Tire & Wheel Package How to Read Speed Rating, Load Index & Service Descriptions…
 
Related Categories: Speed Rating Letters | Speed Ratings Explained | Lower Speed Rating | Speed Rating | H Speed Rating | Speed Calculator | Rating Chart | What Does Z Mean On The Tires | Z Speed Rating | Load Index
 
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