1:14ish tires but a bit smaller for a tag axle? Bo Wallen do you do this?

[dremu]

Seems like the default tires for a 1:14 semi are like 85-88mm OD. I'd like something a bit smaller in diameter for the tag (lift) axle, as is the case on the 1:1's. Counting on my fingers says ~78mm OD would do the trick.

I can find lots that are more like 70-72, but nothing for the sweet spot inbetween. Even RC4WD's tire finder, bless their magic, is coming up empty.

Any pointers gladly taken.

-- A