Mounting tires
Mounting tires must be done only by specially trained professionals using proper tools and procedures. RGC suggests to find local tire change point, which is familiar with motorsport or at least “Run Flat” type of tires. Tires should be stored in warm and dry room at the temperature of at least 20 degrees of Celsius for 24h before being mounted. RGC recommends wheel balancing.
Wheel width
MODEL | SIZE | RIM |
RGC 01 TD (Tarmac DRY) | 195/50R15 | 6″-7″ |
195/45R16 | 6,5″-7,5″ | |
205/50R16 | 7″-8″ | |
215/45R17 | 7″-8″ | |
RGC 01 TW (Tarmac WET) | 195/50R15 | 6″-7″ |
195/45R16 | 6,5″-7,5″ | |
225/45R17 | 7″-8″ | |
225/40R18 | 7,5″-8,5″ | |
RGC 02 TD (Tarmac DRY) | 195/50R15 | 6″-7″ |
205/50R15 | 7″-8″ | |
205/45R16 | 7″-8″ | |
225/45R17 | 7″-8″ | |
235/40R17 | 7″-8″ | |
225/40R18 | 8″-9″ | |
235/40R18 | 8″-9″ | |
265/35R18 | 9″-10″ | |
RGC 02 FW (Full WET) | 195/50R15 | 6″-7″ |
195/45R16 | 6,5″-7,5″ | |
225/45R17 | 7″-8″ | |
235/40R17 | 7″-8″ | |
225/40R18 | 7″-8″ | |
235/40R18 | 8″-9″ | |
RGC 01 DK (Drift) | 195/50R15 | 6″-7″ |
215/50R16 | 6,5″-7,5″ | |
225/45R17 | 7″-8″ | |
235/40R17 | 8″-9″ | |
225/40R18 | 8″-9″ | |
235/40R18 | 8″-9″ | |
265/35R18 | 9″-10″ |
Table 1: Tire Care
It is a common mistake to use improper width rims in relation to the width of tires. RGC strongly advise you to refer to the guidance table above once selecting tires for yours vehicle. For track use, RGC recommends the upper width range. In special cases, we encourage you to consult us at: contact@rgc-tires.com
Tire pressure recommendations
Car weight [kg] | Cold pressure [bar] | Hot pressure [bar] |
< 1000 | 1,85 | 2,15 |
1000-1300 | 2,00 | 2,45 |
> 1300 | 2,15 | 2,70 |
Table 2: Tyre pressure recommendation
Tire pressure is incredibly important factor, which affects both safety and tire performance. In order to ensure safety and trouble-free drive, RGC recommends performing frequent measurements using professional tire pressure gauge and adjusting it if needed to correct values. Exceeding the lower limit of recommended pressures can cause excessive and improper wear of the tire, which can lead to an accident. These are general recommendations not precise instructions to follow. Pressure values recommended by a manufacturer need to be followed in the first place. FWD cars are the most demanding ones in terms of tires. Front axle is responsible for turning, accelerating and breaking, which combined, puts much more load on the front tires in comparison to RWD or AWD cars. Therefore, to provide tire with proper working conditions, higher pressure may be needed to apply.
For Cars having aero packages 0,2 bar higher cold pressures should be applied. Cars equipped with aero packages create more downforce, which results in higher loads on tires, therefore slightly higher starting pressure should be applied.
DISCLAIMER! Table 2.1 pressure values are calculated for dry both conditions and tarmac. In the case of wet tires in wet conditions lower pressures are allowed, however, they cannot drop below 1,7 bar. Due to a variety of raining conditions, it is impossible to produce the same tire pressure guidelines for wet tires as it is in the case of dry tires.
Tire break-in procedure
Tire pressure recommendations
First few kilometres covered on a new set of tires are crucial in terms of durability and performance. Before any competition it is recommended to do a 10km drive with a pressure set at 0,3 bar higher than a recommended cold pressure in Tire pressure recomandation table . During the tire break–in procedure blocking the tires under braking and excessive accelerating causing wheelspin should be avoided. Unless breaking-in tires is possible earlier, RGC advises driving first session at the speed of 70% racing pace with cold pressures at 0,3 bar higher than recommended in Tire pressure recomandation table. The goal of break-in procedure is to smoothly reach the working compound temperature and then cool down the tire, which ensures better durability and performance. RGC recommends breaking-in the tires at least a day before planned competition.
Tire pressure recommendations
Compound selection guide
Wykresy
Factors affecting tires heating up:
- Weather conditions (temperature, humidity, rainfall)
- Surface temperature
- Surface type
- Car weight
- Length and characteristic of a stage
- Driving style
- Car geometry
- Width of the tire
Be aware, that these are only our recommendations, whereas major factor conditioning compound selection is a combination of length of a stage and driving style.
Tire rotation
In order to maximize tire lifetime, RGC recommends frequent rotation of tires between the axles and sides of a car.
Driving style
Driving style has a major impact on the durability of a tire. More aggressive drivers tend to wear and heat up the tires more than smoother drivers, so they should consider selecting harder compounds. It is also very common that drivers tends to turn the steering too far and understeer, which has a negative impact on tire durability and performance. RGC tire works best in low slip angle, so more gentle and smooth drive will allow the competitor to achieve better lap times and lower wear of tire.
Tire storage
RGC products should be stored best in room temperature. Tires should not be stored in temperature below 5⁰C. RGC advises against leaving car parked on tires for a long time, thus it may lead to deformation of the tire or in case of hard compounds “cold cracks” may appear.
Limited Warranty
RGC Motorsport Tires are designed for specific competition and there is no warranty whatsoever besides obvious manufacturing process faults.
Tire modification
RGC does not prohibit modification of the tire (e.g. cutting for rain) but does not take any responsibility for them.
Misapplication
RGC tires are not as versatile as regular road tires due to the application of motorsport compounds, this is why hard compounds should not be used in too low temperatures, analogously soft compounds in too warm conditions. Failure to comply with the recommendations may end up in an accident or even death.
DISCLAIMER
All of the information gathered above are just a general use recommendations and should not be treated as a perfect guidelines for each single application.
Frequently
Asked
Questions
Yes, you can go to the track, the tires are E-approved. We do not recommend everyday use, because the tires have a motorsport compound that requires a certain temperature to achieve 100% performance.
RGC tires come in sizes from 15″ to 18″. You can find the exact size chart here: rgc-tires.com/rgc-tire-care
RGC tires have a wide range of applications. RGC 01 TD will work great in RallyCross, Autocross, short RallySprints and ¼ mile races or streetracing. RGC 02 TD – hillclimb races, rallies, all amateur sprints, track day. RGC 01 TW will cope well in transitional conditions and light – moderate rain, and RGC 02 FW was designed with heavy rainfall in mind.
Uneven tire wear can be caused by: play in the suspension, incorrectly set geometry, too small/too large camber angle, improperly selected rim width for the tire and incorrect tire pressure.
