Legendary performance for the track. What it is: the ultimate high performance DOT Street legal racing tire derived from our extensive experience and knowledge gained in the highly competitive SCCA Trans-Am racing series. Who’s it for: designed for the owner for whom winning is a major consideration.
| Tire Size |  ServiceDescription |
Sidewall |
MSPN | Rim Width Range (inches) |
Section Width on Measuring Rim Width |
Overall Diameter |
Tread Depth (in/32nds) |
Revs/Mile at 45 mph |
Max Load (lbs@psi) |
|---|---|---|---|---|---|---|---|---|---|
| P205/50ZR15 | 84W | BSW | 62485 | 5.5 - 7.5 | 8.4 on 6.5 | 22.8 | 4 | 912 | 1113@51 |
| P225/50ZR15 | 90W | BSW | 06811 | 6 - 8 | 9.1 on 7 | 23.6 | 4 | 881 | 1301@51 |
| P205/55ZR16 | 89W | BSW | 21509 | 5.5 - 7.5 | 8.4 on 6.5 | 24.5 | 4 | 849 | 1279@51 |
| P225/50ZR16 | 91W | BSW | 12323 | 6 - 8 | 9.1 on 7 | 24.5 | 4 | 849 | 1367@51 |
| P245/45ZR16/LL | 88W | BSW | 22748 | 7.5 - 9 | 9.57 on 8 | 24.65 | 4 | 844 | 1235@51 |
| P225/45ZR17/LL | 84W | BSW | 09627 | 7 - 8.5 | 8.9 on 7.5 | 24.8 | 4 | 839 | 1102@51 |
| P235/40ZR17/LL | 84W | BSW | 19220 | 8 - 9.5 | 9.5 on 8.5 | 24.2 | 4 | 860 | 1102@51 |
| P245/40R17/LL | 86W | BSW | 39601 | 8 - 9.5 | 9.8 on 8.5 | 24.2 | 4 | 860 | 1168@51 |
| P255/40ZR17/LL | 89W | BSW | 27377 | 8.5 - 10 | 10.2 on 9 | 24.8 | 4 | 839 | 1279@51 |
| P275/40ZR17/LL | 93W | BSW | 95479 | 9 - 11 | 10.9 on 9.5 | 25.5 | 4 | 816 | 1433@51 |
| P315/35ZR17/LL | 93W | BSW | 96664 | 11 - 12 | 12.6 on 11 | 25.5 | 4 | 816 | 1433@51 |
| P225/40ZR18/LL | 83W | BSW | 09117 | 7.5 - 9 | 9.1 on 8 | 24.9 | 4 | 829 | 1074@51 |
| P245/40ZR18/LL | 88W | BSW | 15639 | 8 - 9.5 | 9.8 on 8.5 | 25.4 | 4 | 819 | 1235@51 |
| P265/35ZR18/LL | 85W | BSW | 03040 | 9 - 10 | 10.7 on 9.5 | 25 | 4 | 832 | 1135@51 |
| P275/35ZR18/LL | 87W | BSW | 26533 | 9 - 11 | 10.9 on 9.5 | 25.4 | 4 | 819 | 1201@51 |
| P285/30ZR18/LL | 86W | BSW | 39643 | 10 - 11 | 11.4 on 10 | 24.9 | 4 | 829 | 1168@51 |
| P335/30ZR18/LL | 95W | BSW | 42166 | 12 - 13 | 13.5 on 12 | 25.7 | 4 | 809 | 1521@51 |
2. Section width varies approximately 0.2" (5mm) for every 0.5" change in rim width.
WARNING: Serious or fatal injury may result from tire failure due to underinflation or overloading. To ensure correct air pressure and vehicle load, refer to vehicle owner's manual or tire information placard on the vehicle. Serious injury or death may result from explosion of tire/rim assembly due to improper mounting. Only tire professionals should mount tires and they should never inflate beyond 40 psi to seat the beads. Before mixing types of tires in any configuration on any vehicle, be sure to check the vehicle owner's manual for its recommendations.
DANGER: Never mount a 16" diameter tire on a 16.5" rim.
DANGER: Never mount a 17" diameter tire on a 17.5" rim.
Important Note: The g-Force R1 is a special-use product designed for competitive racing. As such, the following precautions must be followed when using the product.
At the Race Track:
Never inflate the tire to less than 19 psi.
Use the information provided in the BFGoodrich g-Force R1 Care & Feeding Brochure for cold inflation pressure guidelines and other product usage recommendations
On the Street:
g-Force R1 tires have a reduced tread depth when new, and a tread rubber compound optimized for maximum dry grip. As such, they will wear out much sooner and offer less wet grip when compared to normal passenger-car tires. Therefore, observe tire-wear condition often. Do not use the tires on the street when the tread depth wears to less than 2/32nds inch. Reduce speeds in wet conditions and whenever any standing water is present. The g-Force R1 is not intended for use in snow and ice conditions.
For high-speed driving, additional inflation pressure and possibly reduced tire loading and/or upsizing is required. In the absence of specific recommendations by the vehicle manufacturer, use the following guidelines based on those in the European Tyre and Rim Technical Organization Standards Manual.
For speeds over 189km/h (118 mph), load and inflation must be adjusted according to the table below.
W-Speed Rated Sizes:
Maximum Speed (mph) 118 124 130 136 143 149 155 161 168
Inflation Increase (psi) 0 1.5 3.0 4.5 6.0 7.5 7.5 7.5 7.5
Load Capacity (% of max) 100 100 100 100 100 100 95 90 85
Learn More > Uniform Tire Quality Grading (UTQG) Ratings
The Uniform Tire Quality Grading Ratings (UTQG) is a tire information system designed to help you make the relative comparisons among all passenger car tires. The UTQG rating tells you about the tire's treadwear, traction, and temperature grades.
| Size | Treadwear | Traction | Temperature |
|---|---|---|---|
| P205/50ZR15 | 40 | B | A |
| P225/50ZR15 | 40 | B | A |
| P205/55ZR16 | 40 | B | A |
| P225/50ZR16 | 40 | B | A |
| P245/45ZR16/LL | 40 | B | A |
| P225/45ZR17/LL | 40 | B | A |
| P235/40ZR17/LL | 40 | B | A |
| P245/40R17/LL | 40 | B | A |
| P255/40ZR17/LL | 40 | B | A |
| P275/40ZR17/LL | 40 | B | A |
| P315/35ZR17/LL | 40 | B | A |
| P225/40ZR18/LL | 40 | B | A |
| P245/40ZR18/LL | 40 | B | A |
| P265/35ZR18/LL | 40 | B | A |
| P275/35ZR18/LL | 40 | B | A |
| P285/30ZR18/LL | 40 | B | A |
| P335/30ZR18/LL | 40 | B | A |
The Uniform Tire Quality Grading (UTQG) is a tire information system designed to help you make relative comparisons among all passenger car
tires, except for deep tread, winter-type snow tires; space-saver or temporary use spares; or tires with normal rim diameters of 12 inches or less.
The UTQG is not a safety rating and not a guarantee that a tire will last for a prescribed number of miles or perform in a certain way. It
simply gives you additional information to combine with other considerations, such as price, brand loyalty, and dealer recommendations.
Under UTQG, tires are graded by the manufacturers in three areas: treadwear, traction, and temperature resistance.
The UTQG information can be found on two places on the tire:
there is a paper label affixed to the tread, and
the grades are also molded into the sidewalls.
Treadwear
The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified
government test course. For example, a tire graded 150 would perform over one and a half (1.5) times as well on the government course as
a tire graded 100. The relative performance of tires depends upon the actual conditions of their use, however, and may depart significantly
from the norm due to variations in driving habits, service practices, and differences in road characteristics and climate.
Traction - AA, A, B, AND C:
The traction grades from highest to lowest are AA, A, B, and C and they represent the tire's ability to stop on wet pavement as measured
under controlled conditions on specified government test surfaces of asphalt and concrete. A tire marked C may have poor traction
performance. The traction grade assigned to this tire is based on braking (straight ahead) traction tests and does not include
cornering (turning) traction.
Temperature - A, B, and C:
The temperature grades are A (the highest), B, and C, representing the tire's resistance to the generation of heat and its ability
to dissipate heat when tested under controlled conditions on a specified indoor laboratory test wheel. Sustained high temperature
can cause the material of the tire to degenerate and reduce tire life, and excessive temperature can lead to sudden tire failure.
The grade C corresponds to a level of performance that all passenger car tires must meet under the Federal Motor Vehicle Safety
Standard No.109. Grades A and B represent higher levels of performance on the laboratory test wheel than the minimum required by
law. The temperature grade for this tire is established for a tire that is properly inflated and not overloaded. Excessive speed,
underinflation, or excessive loading, either separately or in combination, can cause heat buildup and possible tire failure.
