Dear Teams, Drivers and Motorsport fans,
The summer holidays are almost over and the coming races of the TOYO TIRES 24H Series are getting close. We hope everybody had a good holiday and is relaxed for the second part of the motorsport season.
Today it is only 6 weeks before the start of the 12H Hungary at the Hungaroring, which starts on the 27th of September. Please note: If you want to participate, you have only a few days left before the regular entry closing date passes.
The entry closing dates for the other races are getting closer as well. For entering 24H Valencia you have only 2 weeks before the regular entry closing date. While the latest entry for the 4th edition of the TOYO TIRES 24H Dubai, with already 81 registrations, might be determined by the number of entered teams, rather than the entry closing date.
This newsletter contains:
- Entry closing dates races
- Eligible cars TOYO TIRES 24H Series
- Differences between regulations 24H Series 2008 and 2009
- Background information class SP2 based on weight/ power ratio
Entry closing dates TOYO TIRES 24H Series 2008 and TOYO TIRES 24H Dubai 2009
Below you can find an overview of the entry closing dates for the various races we have in 2008 and 2009. Besides dates we give you the links to the quick entry, regulations and the entry forms.
Race
Entry closing date
TOYO TIRES 24H Series 2008
12H HUNGARY 27th of September 2008
16 AUGUST 2008
24H VALENCIA 11th and 12th of October 2008
30 AUGUST 2008
TOYO TIRES 24H DUBAI 2009 9th and 10th of January 2009
15 SEPTEMBER 2008
If you want to participate in the TOYO TIRES 24H Series 2008, the 12H Hungary or the 24H Valencia, please fill in the quick entry:
Quick entry TOYO TIRES 24H Series 2008
Following the links below you can find the regulations 2008 and the entry forms:
– Regulations TOYO TIRES 24H Series 2008
– Entry form 24H Valencia 2008
When you are interested in the TOYO TIRES 24H Dubai 2009, please fill in this quick entry:
Quick entry TOYO TIRES 24H Dubai 2009
Following the links below you can find the regulations 2009 and the entry form:
– Regulations 24H Series 2009 and the TOYO TIRES 24H Dubai 2009
– Entry form TOYO TIRES 24H Dubai 2009
Eligible cars TOYO TIRES 24H Series
We have noticed that last weeks newsletter has lead to some questions from teams about the regulations for the 24H Series 2009. We would like to give you a summary with eligible cars and some additional information about the changes that we made in the regulations in comparison to 2008.
Below an overview is given of the eligible cars for the TOYO TIRES 24H Series.
This is applicable for:
12H Hungaroring, 26-27 September 2008, Hungary
24H Valencia, 10-11-12 October 2008, Spain
And the 4th edition of TOYO TIRES 24H Dubai, 8-9-10 January 2009, Dubai (also the amendments in the regulations compared with above races are mentioned)
Eligible Cars TOYO TIRES 24H Series
In general cars up to 4000cc / 6 cylinders
Touring cars
GT Cars
24H Special cars
Silhouette cars
Cup cars
Exceptional cars (more than 4000cc and/or more than 6 cylinders)
with a Weight/Power ratio of 3,7 KG/HP or more.
Classes (petrol and diesel) 
For Petrol:
A1 Up to 1600 cc
A2 1600cc – 2000cc
A3 2000cc – 2500cc
A4 2500cc – 3000cc
A5 3000cc – 3500cc
A6 3500cc – 4000cc
For Diesel (gas oil):
D1 Up to 2000cc
D2 2000cc – 3000cc
Special Groups:
SP1 Group Silhouette Cars up to 3600 cc
SP2 Group Exceptional Cars (more than 4000cc and/or more
than 6 cylinders) with a Weight/Power ratio of 3,7 KG/HP or more.
For detailed information refer to “Background information class SP2”.
Differences between regulations 24H Series 2008 and 24H Series 2009.
Apart from the fact that in 2009 for all races the HANS system will be compulsory, there are some amendments in class A6 (3500-4000cc). Note that for 2008 Hans is only compulsory for the 24H Valencia.
To increase competition in class A6 (3500-4000cc) the minimum weight and the max fuel tank capacity in this class have been amended. The table below shows the amendments.
Class A6 (3500-4000cc)
Weight/ Fuel tank
24H Series 2008
24H Series 2009
12H Hungary 26-27.09.2008
TOYO TIRES 24H Dubai
24H Valencia 11-12.10.2008
09-10.01.2009
3500 – 3750 cc
1225 kg / 120 Litre
1200 kg / 120 Litre
3750 – 4000 cc
1275 kg / 120 Litre
1300 kg / 90 Litre
With the weight advantage of a Porsche GT3 cup spec and the fuel tank limitation of the RSR, the performance gap will be much smaller. So the racing skills of the driver will be much more of importance.
Although the weight difference of 100kg between a Porsche cup and Porsche RSR, the maximum weight of the RSR is not increased due to the reduction of the maximum Fuel capacity to 90 litres.
For a printable version of this information, please follow this link:
Eligible cars and differences between regulations TOYO TIRES 24H Series
Background information class SP2 based on weight/power ratio.
A new class (SP2), based on “weight/power” ratio is introduced to accept cars with more than 4000cc and/or more than 6 cylinders, who still fits in the current performance range, without increasing the upper performance level. So faster cars will not be accepted.
The class is meant for cars who do not fit in the regular classes due to more than 4000cc and/or more than 6 cylinders or do not full fill the weight requirement. But on the other hand fit from performance point of view in the field with the BMW´s and the Porsche GT3 cup versions. To avoid faster cars the class is restricted by the so called weight/power ratio.
Depending on the configuration, cars which could fit in this new class could be: BMW V8 GTR, Ford Mustang FR500 GT4, Marcos Mantis, Panoz, V8 Star Holden, Aston Martin V8, Ferrari, Audi R8, etc.
The ratio will be 3,7 KG/HP: Which means a car with weight/power ratio equal or greater than 3,7 KG/HP will be accepted in this class. Cars with a “weight/power” ration of 3,7 can have approx the performance of an average Porsche GT3 cup.
It will be calculated as the following:
(Weight of the car + weight of the driver) / HP
– Weight of the car with empty tank (max. 5 litre)
– Weight of the driver (driver with full driver’s equipment)
– HP measured on the wheels
The HP will be “live” measured during the event with a,
so called, Powerlogger to be supplied by the Promoter.
For more details, see next page.
Explanation of “weight/power” ratio class.
The ratio will be 3,7 KG/HP
Which means a car with weight/power ratio equal or greater than 3,7 KG / HP will be accepted in this class.
The ratio of 3,7 is chosen, so cars can have approx. the performance of an average Porsche GT3.
The “weight/power” ratio will be calculated as the following:
(Weight of the car + weight of the driver) / HP
– Weight of the car with empty tank (max. 5 litre)
– Weight of the driver (driver with full driver’s equipment)
– HP measured on the wheels
Example:
The weight of a car is 1350kg
The weight of a driver is 80 kg
HP measured on the wheels is 382 HP
(e.g. engine is 450HP and losses (gearbox, driveshaft, etc.) are 15%. Makes 0,85 x 450=382 HP on the wheels)
(1350+80) / 382,5 = 3,74 KG/HP
So this car would fit in the 3,7 KG/HP class.
Determination of HP
The HP will be “live” measured during the event with a, so called, Powerlogger to be supplied by the Promoter. This Powerlogger-unit, which will be mounted in the race car, measures the applied power (HP) at the wheels. The date received via the Powerlogger is the only data used to check compliance with the regulations (weight/power ratio). Data supplied by the team from a rolling roads or Dyno´s will not be accepted.
For a printable version of this information, please follow this link:
Background information class SP2
If you have any questions, you can contact us by mail info@creventic.com or by phone 0031 485 47 11 66.