Thats is right, my 97 discovery starts to shake terribly when it reach 70 mph! Anybody has the same problem? Any thoughts that you guys could share to fix this problem? Runs smooth on sideroads though! Starts happening after an oil change and tire air pressure from mechanic!
Thanks in advance

 

when was the last time you had an alignment? how old are the tyres? could be not balanced or mis-aligned.

 

tires are fairly new! but I haven't had an alignment in a while! tnx, I didn't think about that!

 

So we don't have to guess for too long, what have you checked so far??? u-joints, tire balance or bad tires for starter.

 

checked the tires front tires psi is a bit too high for the recommended pressure! Release some air to get the right pressure but I haven't tried it out on the freeway yet! Tires are fairly new, u-joints was not checked since I don't know what that is!

 

High pressure won't cause that, what was the pressure?
Start with a tire inspection and rebalance at a good tire store.