Koly,

Let's make sure we're on the same page here. ETS is the traction control which is supposed to mimic locking and limited slip diffs. ABS is antilock brakes right? ETS and ABS do not work together. ABS works only when you stand on the brakes. When the tires lockup, the brakes release. So the only difference being that for the same amount of time that the brakes release in between lockups, the larger tire will roll a little bit more. That's the only difference larger tires will make with the ABS.

I hope this link works:

http://www.dakar.com/2002/us/classementsSpecif.oft?service=DRaceServer&RaceYear=2002&RaceType=DAK&StandingType=SCR_A&StageNumber=1610&Group=T1&Class=T1.1&Category=AUTO

Kuan