Sources
Every rule the calculator uses, with the exact words of its source. Only tyre makers, vehicle makers, standards bodies, South African law and engineering research are used. Where nothing citable exists, it's listed under What isn't known instead of being filled with a guess.
Rules · Load tables · What isn't known · Source documents · Photo credits
Where those numbers come from
The sources behind the card you came from. Everything else is further down. Back to the calculator
All rules
Load tables
What isn't known
Source documents
Photo credits
All photos are from Wikimedia Commons under the licences shown; they were resized for this site. Fonts: Inter and Rajdhani, SIL Open Font License (files in fonts/).