
Originally Posted by
JayRacer37
Glad to hear all the positive feedback on these tyres! I can assure you that a helluva lot of work, effort and passion was put into making the RaceAttack what it is, with development from both Europe and here (our summer is their winter, so my team and I have been Continental's winter development team for the past two years.)
I just wanted to expand on the tyre pressure debate. Most everyone here is right, (other than Ivan, sorry mate, 18 PSI is a bit...out there) or very close. Shaun is dead right with the pressures he recommends, but that is for track use with tyre warmers only. On the road or even track without warmers running this low will cause bad handling characteristics and increased wear. I actually have a full listing of pressures recommended by Continental that I will publish here. This is even down to pressure for specific compounds in race attack, and the application the tyre is to be used for. All pressure is initially in BAR, so I have rounded to the nearest PSI. (BARx14.5=PSI)
This is word for word extract from Continental’s pressure advice:
“Air pressure is dependent on various factors. Engine performance, chassis set-up, choice of suspension springs [rates], riding style, lap times – the list is endless. Therefore, information on tyre pressures can only be recommendations to be used as a basis for further experiments.
There are two ways to check air pressure in race tyres, cold or warm. Here are the cold air pressures (ambient temperatures):
RaceAttack Comp Front: 1.9 bar/28PSI
RaceAttack Comp Rear: 1.6 bar/23PSI
RaceAttack Street Front: 2.1 bar/30PSI
RaceAttack Street Rear: 1.9 bar/28PSI
RaceAttack Rain Front AND Rear: 2.3 bar/33PSI
Here are pressure figures warm (heated to 80 degrees centigrade and run for 2 laps):
RaceAttack Comp Front: 2.1 bar/30PSI
RaceAttack Comp Rear: 1.9 bar/28PSI
RaceAttack Street Front: 2.3 bar/33PSI
RaceAttack Street Rear: 2.1 bar/30PSI
RaceAttack Rain Front AND Rear: 2.3 bar/33PSI
Two Points:
- For use on the road, the air pressures given by the manufacturer shall be used as a basis.
- These Figures are valid for all sizes, regardless of the tyre of motorcycle.”
So, basically if you are on a track and/or using tyre warmers, the pressure chart above applies to you. If you are using these tyres on the road, or on the track WITHOUT tyre warmers, pressures you ran with your bike stock, ie the pressures recommended by Yamaha, Honda, etc are a valid starting point. We genrally recommend the hot pressures (second list above) as a starting point for cold pressures for use without warmers ON TRACK, and advice and recommendations from people like The Stranger/Noel who have run these tyres on the road are very valid for non tyre warmer use/road application. Needless to say, tyre construction has moved on in the past few years making these pressures, particularly the rear, seem very low, so I understand if you are a bit sceptical. As a quick explanation the tyre sidewall can now do more work holding the tyre up so the pressure can be lower giving a greater contact patch without the excessive overheating that would have and does occur with older technology tyres.
Also, if you are riding on the road, RaceAttack street is a very attractive choice. This tyre has a much lower temperature operation corridor, meaning it works well from cold. It is also capable of lapping at a close pace to RaceAttack Comp. Here is a general breakdown of average fastest laps for a single day testing on my 2005 ZX6-RR at manfeild.
RaceAttack Comp: average 1.10.00 or so (compound specific to temperature, this is a basis of med comp)
RaceAttack Street: average 1.10.50
SportAttack: average 1.11.20, but beginning to overheat after approx. Ten laps at this pace
This shows that the SportAttack is also a very valid option for fast riding, whilst less compromise on milage and cold performance.
Also, Conti Stockists at the moment should have some great specials on, so if your looking, approach your dealer and see what they can do for you!
Cheers,
Jay #37.
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