12-14 psi depending on terrain and rider weight.
Emperor Bear says 29 psi.
29 psi (2 bar)front and rear for a good running
The low tire pressure warning light, on a Lexus IS 250, can be reset by adjusting the tire air pressure. The recommended tire air pressure is 30 pounds per square inch.
250 bars
I don't have a manual for my 04' XR 250, but when I took it by a motorcycle mechanic recently for a tire stem valve problem, he told me 10 to 15 lbs is good pressure for trail riding. 10 lbs is what he filled it to, and it seemed sufficient for our day of riding that followed.
According to my Clymer service repair manual, the original 1985 -87 Fourtrax 250 tire sizes are: Front = 21 x 7.0 -10, Rear=25 x 12.0 -9
2.2 - 2.6 psi
The recommended tire pressure for a 2010 Triumph Speed Triple is typically around 36 psi (250 kPa) for the front tire and 42 psi (290 kPa) for the rear tire when cold. It's important to check the owner's manual or the tire pressure label on the bike for the specific values, as they can vary based on load and riding conditions. Always ensure to check tire pressure regularly for optimal performance and safety.
depends on year with modification yes
yes there is it is a big nut on the rear of the rear end
depends on how big? a rear compact tractor tire 11.2x24 is about$250 if you get an irrigation tire same seize about $130
around a million, plus or minus a few.