Thank you very much guys, i'll check with the dealer,i think before i bought the truck they had an extended body fitted to the truck i.e the box on the truck,which normally comes with a 20ft box,which was replaced with a 24ft box which is on the truck at present,& what happens is that when the truck is fully loaded to it's full capacity,the rear wheels seems to buldge out quite heavilly due to the load stress.
Just another question is,if i do change the wheels to a bigger size which i would like to do,how much bigger can i go,& would it have an effect on the overall drive quality & economy,in any way,besides the tacho that would need re doing.
Once again thank you for all your help.
SELWYN MENTOR, January 2012