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I also forgot I turned up the fuel a just a touch, and bumped up the governor just a little too but only for loaded gear changes not for open road wide open throttle...no way. Too many sets of gears flying around. :mrgreen:

I'm pretty sure it's 6.527:1 when you calculate both ratios together; the ring and pinion and the set in the portal box. I didn't know you had the torque converter truck- yep, they're slower but rated to pull something like 300 TONS, a buddy of mine has one.

Check your filters or run the tire size through a speed calculator like at randy's ring and pinion.com. I'm at a GPS'd 52mph wide open and cruise at 40-43mph usually.

Keep an eye on the Unimog Exchange or talk to a couple of the Mog places to see what they turn up. There's AG stuff available but usually they're only speed rated to 25mph -ish usually which even for a Mog is a little low. :mrgreen: Some guys are running 395/85 R20 XML's or XL's with a cab...

They are DOT legal Michelin Radials. 405/70 R20 XM-47. Google XM 47 and sit down for pricing results. Michelin is REALLY proud of them. Continental makes a similar tire but the cost is still way, way up. MITAS in Europe makes an equivilent size and look tire, but I'm not sure if it's a...

Nice CASE truck! Here's a pic with 14.5 R20 (42"x16") XM-47's.