Now, you have raised another issue. Although you have not mentioned the brand name of the tank you are considering for purchase, you should be aware that IMS
tanks for the steel framed WR450's have on occasion, melted due to heat generated from the header pipe. Clark, Acerbis
(Acerbis made this tank) tanks manufactured for the steel framed WR450's did not have a melting issue.
The tank was designed to hang very low on the right-hand side of the bike and was located very close to the header pipe. Several fires were the result of this condition and were discussed on Thumper Talk in the early years of its existence. A friend buried the remains of his burned steel framed WR450 in a pine forest in northern Baja California, after the IMS
tank on his bike melted due to the heat generated by the header pipe. He then had to endure a long butt-numbing buddy-up ride back to his truck and later the threat of a law suit against his vehicle insurance company to receive compensation for his loss. Buyer beware.