What air pressure in tyres please

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elect70, Mar 8, 7:32pm
I bought it like thatcertainly dontsuffer any traction loss, had several arguments with WOF testers,saying must have same sizettyres front & rear.

unbeatabull, Mar 8, 7:38pm
Some people really need to read their VIRM! haha. Same size tyre on the same AXLE! Only thing that has to be the same front and rear is the load rating within 2 of each other around the whole vehicle, and rolling diameter is 15 or 20% of original (cant remember which but is mainly to do with putting the speedo out)

mrfxit, Mar 8, 9:00pm
Only other vehicle that must run the same size 4 tyres are AWD vehicles.
If I remember my tyres rolling calculations correctly, approx a 3% error will change the speedo by around 4kph at 100kph (up or down depending on height change)