Space Between Dual Tires

[magik235]

My motorhome is on a Chevy chassis. It has a 14 bolt rear axle with dual wheels. Currently there are 235 85R 16 tires on it. I would like to replace them with the same size. There is 1/4" space between the dual tires. What is the minimum acceptable space between tires?

[wolfe10]

Or, closest point of contact (the bulge just above the tread).

And, are tires properly inflated?

Most tire manufacturers have "minimum dual spacing requirements". Check with your tire manufacturer.

[yrusoslo]

is that 1/4 inch space at the top or were the tires hit the road?