I bought a space saver wheel off eBay that was advertised as being for the MG5. I checked with him that it was suitable for the facelift trophy with 17” wheels and he confirmed that it was. The wheel looked good - 31/2Jx16 ET25,5 H2 seems to be the right fit despite it actually being a VW wheel - however it came with a 125/70R16 tyre.
I did some quick calculations and this is clearly the wrong size — the diameter is over 10% smaller than my normal wheels. I’d maybe use it to go slowly for a couple of miles to a tyre shop in extremis, but not if I was out in the Scottish Highlands 100 miles away from help! Here’s a comparison:
Obviously thinner is just fine and the rim size difference is irrelevant but the diameter just isn’t acceptable to me.
I got in touch with the seller and explained, and they were perfectly happy to either take it for a refund or to put on a new tyre. I popped back yesterday and they swapped it out for a 125/90R16, which is a much better match:
2.4% smaller is much more reasonable imho, and I believe it matches the OEM space saver spare — can anyone please confirm? I’ve bought a set of rounded bolts to go with the wheel (in a bag marked only for the spare wheel) and I’m now a lot more comfortable knowing that I have a decent spare to keep me going if necessary.
The seller was rosparewheels on eBay, based in Enfield, would definitely buy from them again.