Data on Broadford’s New Track Surface
Updated: May 28, 2020
Ok first things first. The single biggest mistake most people make when trying to find the right pressure for a new surface is, they start at normal pressures or just a bit higher. Then once tear starts, they “try to cure or fix the tear”. The rubber is already damaged and exposed once the tear starts, plus half of the rubber has been left out on track. So the best your ever going to get is the tear not to get much worse. Even if you achieve this you are still not going to have conclusive data.
Instead the best way is to start much higher than normal then come down slowly until you see a little bit of tear start. Once that happens go back up 1 psi. That way you don’t destroy tyres while you are learning the new surface PLUS! You will have reliable, usable information that is specific to you and your setup.
Currently for Broadford’s new surface on Pirelli’s we recommend the compounds pressures in the below table. Start with these then work your way down on the rear only. Leave the front at these pressures in the table.
NOTE: These are ‘IN’ pressures. That’s the pressure we want when you come in from your session. You need to check them within 30sec to 1min of parking your bike.
On cold day you can expect your front to drop 3 – 4 psi depending how fast you are. If you are not really fast the rear will drop about 2 psi as well. Fast riders won’t see a rear drop. This will also change a little depending on what warmers you use but you will get a feel for how much your pressure change. The key is to start high.
So if it’s really cold and your front target IN is 38psi, set it to 42 or 41 on the warmers before you go out. Yep! That high. When you come in if the psi is 38psi, just leave it. You don’t need to check it again before you go out. If it’s too high when you come in, let air out, if too low, add air.