This discussion is a good reminder to add checking the tire treads to the list of things to do when picking up - especially in winter. Had a Budget rental at MHT a couple of winters ago and forgot. Didn’t realize the Florida-plated car had nearly bald tires until sliding through the Irving parking lot after pulling off the road to get gas. Was on the way back to the airport, so made it back OK. Friends had a similar issue with another agency in MHT but had the presence of mind to notice it right off.