I have exactly the same problem with my 05 L200 2.5 diesel double cab pick-up. OK one day - steering wheel vibration the next day, had the fronts balanced at a good tyre shop, ok for a day or so, then back it comes.
Suspension is ok no wear or knocking, toe-in set dead parallel, no wear in front cv's etc.
Tried altering pressures, 4 psi higher pressure than standard seems to stop it almost completely but don't want to run them higher permanently.
The front tyres are standard size Maxxis 265-70 x 16"- big fat Tonka toy tyres, not my choice, they were new on it when I bought it and I can't wear them out!
The only thing I can put it down to is flex in the sidewalls at standard pressures, and bumping the pressure up stiffens the sidewall sufficiently to stop the vibration.
Next set of tyres all round will be a set of BFG AT's which have 4 ply sidewalls.
|