How is speed rating calculated?

How is speed rating calculated?

Speed ratings, in their simplest form, compare the time posted by each horse with a standard time (the time you would expect each horse to run based on the class and distance of the race). These standard times should be compiled from as much recent data as can be found.

What is a good speed rating on a tire?

For tires with a maximum speed capability higher than 240 km/h (149 mph), a “ZR” may appear in the size designation. Tires with a maximum speed capability higher than 300 km/h (186 mph), require a “ZR” in the size designation….Tire Speed Rating Chart.

T 190 118
U 200 124
H 210 130
V 240 149

Can you mix speed ratings on tires?

Just remember, never mix and match tires with different speed ratings on your vehicle. This will cause major problems with the handling of your vehicle. Vehicle handling may be affected, and the vehicle’s speed capacity is now limited to the lowest speed-rated tire.

Does tire speed rating matter?

The speed rating tells you the speed the tire can safely maintain over time. A higher speed rating usually means you will have better control and handling at higher speeds – and that the tire can take the extra heat. As a general rule, tires with higher speed ratings also handle better at slower speeds.

What is top speed in racing post?

Topspeed explained Topspeed (Dave Edwards) is the Racing Post’s speed rating, adjusted to 10st (12st jumps). Ratings are calculated by comparing the horse’s actual time with Racing Post standard time for the course and distance, and adjusting for weight carried and going.

What is the Equibase speed figure?

The Equibase Speed Figure tells you how fast a horse has been running in its past races with a single number. Its sophisticated algorithms are based on the horse’s actual time in combination with other factors, such as the condition of the track.

Should all 4 tires have same speed rating?

In general, all tires on the vehicle should be the same speed rating and replacement tires should have a speed rating equal to or greater than the speed rating of the OE tires.” “Tires with different speed ratings may vary in ride, handling and/or other performance characteristics.

What does the H and T mean on tires?

The codes on the sides of tires are unfamiliar to most car and truck owners, but knowing what the codes mean is important to choosing the proper tires. The H/T on tires stands for highway/terrain.

Can you put V rated tires instead of H?

3 Answers. tl dr – There is absolutely no worries about putting a higher rated tire on your vehicle. It just means you can drive your car faster if the car is capable (and the speed limits will allow). You will gain nothing in any other aspect of the tire, such as tire life, treadwear, or what have you.

How do you read a Racing Post Rating?

Racing Post Ratings (RPR) are based on a horse’s racing ability in relation to the weight carried i.e. if horse X beats horse Y carrying the same weight then it is awarded a higher rating. The ratings are expressed in pounds (lb) so a horse rated 140 is regarded as 10lb better than one rated 130.