Slicks to Leaf Spring Space?

I run 275 x60-15 ET pro @ 10" wheel
from the Summit site
Tread Width: 9.76 in.
Minimum Recommended Wheel Width: 7.50 in.
Maximum Recommended Wheel Width: 9.50 in.
https://www.summitracing.com/parts/mtt-3754x/overview/

on the 72 Swinger, with a 315 x 60-15 @ 10" wheel

Thread width 11.42 in.
Minimum Recommended Wheel Width: 8.50 in.
Maximum Recommended Wheel Width: 11.00 in.