Kart tyre pressures, a free guide for parents

Every race weekend has the same scene: somebody standing over four cold tyres in a damp paddock, deciding the pressures from memory and hoping. If that somebody is you, this guide is for you.

Race-day tyre pressures: a karting parent's guide is 14 pages, written in plain words, and free when you join the AVB RaceLabs early-access list. It does not assume an engineering background, and it has no formulas. It tells you what to do, in what order, and what to look for.

What is in it

• Why one PSI changes how the kart grips, turns and wears its tyres
• Cold pressure in, hot pressure out: the one idea that makes everything else make sense
• The eight things that move your numbers on the day, from track temperature to tyre age
• The kit you actually need, and why you must only ever use one gauge
• A seven-step race-morning routine you can follow every time
• The two minutes you have to read hot pressures before the number starts lying to you
• How to read the rubber: glazed, grained, blistered or just right
• Four rules for every change, and what to do on cold mornings, drying tracks and in the wet
• The eight mistakes almost everyone makes at the start
• A printable tyre notebook page

Who it is for

Karting parents, new drivers, mechanics and anyone who has ever copied the pressures from the kart next door. It is written for the UK club paddock but the advice holds anywhere.

And when you want the sums done for you

Everything in the guide, the AVB RaceLabs app works out for your kart, your track and the forecast for your session: cold pressures for each corner, a target hot pressure, and advice that sharpens every time you log your hot pressures. Join early access to be first in when it launches.