gear ratio

[xjredneck]

what gears would you recommend for my 2000 xj that does about 100 miles a day on road and about 40 miles of raod each weekend.(some towing required)

[4.3LXJ]

That depends on tire size. how tall are those 235s?

[xjredneck]

there just shy of 30 in tall

[4.3LXJ]

3.73 would be a good ratio. But 4.10 is easier to get. That would give you plenty of power and with a 31 inch tire you would have a correct speedometer with a 35 tooth speedo gear.

[BlueXJ]

Some XJs came with 3.73:1 gears so you may be able to swap a set into your diffs.