speedo correction???

[squatch]

Does anyone have a diffinitive answer on speedo correction for big tires on TITAN 4X4 (up to 35's)? I know from experience running big tires with an auto trans is bad news without correction in computer controlled vehicles. The service dept told me they can do some correction but are not sure how much. Are there any commercial boxes avail? I believe TITAN's use abs sesors instead of vss. Also does anyone make amber bulbs (much better in snow and real fog) for factory fog lights?

[the head]

It does use a VSS in the transmission. In fact, it uses two just in case one fails so you can get home.