I just got a new set of 235 85 R16 tires for my 53 Chevy 3100 and what a great improvement for the handling of the truck! My dilemma concerns carrying a spare. A 235 85 16 is too fat to fit underneath the bed in the spare tire holder. My current and very cracked and old spare fits fine ; a 650-16. Any ideas on an appropriate, safe tire size to operate as a spare? I doubt I would ever run the spare for more than 50 miles as the truck operates mostly in the local area. Thanks
