Got my spare wheel + tire + S10 jack today. I was first planning on getting a 15" sonic wheel and a smallish tire to go with this from TireRack. Cost would have been about $165. But, I heard of some 15" wheels that weren't working properly with the Bolt, and that gave me some concern. So, instead I opted to get the donut spare tire for the Bolt listed on Ebay sold by Edgar Rivera (blacklabtire1) because it had a 16" wheel. Listed cost was $185 but Ebay gave me a $5 discount for some unknown reason. So total cost was $180 and that included shipping. It also included the jack. The standard jack included with the tire was for a pinch weld placement. I asked Edgar if I could get the S10 jack with the nipple instead and he made the substitution. The Ebay website listed the tire size as 115/70D16. What was delivered was a 135/90R16, so a bit different. However this is probably better. According to TireSize.com, the donut spare diameter is actually just 0.1" larger than the Bolt stock tire. My guess is that with vehicle weight applied, the diameters would be basically identical. So, it's a spare that could go anywhere, though probably better on a free wheel rather than the drive wheel. Tire width is 5.3", about 3.2" narrower than stock. Tire weight is 29.4 lbs and the jack kit is 7.8 lbs, so 37.2 lbs total. The spare fits easily in the lower trunk compartment without rubbing up against the seat, and there is enough room to tilt the false floor up at a good angle, but not enough room for the false floor to fit into the angled slots, I don't think. I haven't had a flat requiring a roadside tire swap in decades, so this is mostly for peace of mind. But, I'm happy with the purchase and how well it fits in the trunk, even if I never need to use it.