If all your doing is pavement prowling on good streets it'll probably be fine. But sadly 80% of roads in my area warrant a decent sidewall. Bout to do my first long haul trip with the TB though NH to Nova Scotia, Canada
Would throw off your speedo by 1mph @ 30 and 2mph @ 60 which would throw off your odometer and probably cause some warranty concerns with Chevy just FYI.