I got a flat last night and had the donut put on. This morning it's clear the donut is flat too! I need to buy a new donut space-saver spare for my 2009 Jag XF Premium, found this used one online which seems to be same size as mine (Pirelli T135/80 R18)...but it says it's for 2013 XJ (part # C2P12621). Can anyone tell me if this will fit my vehicle before I buy it?

 

Unless you get only the tire, double check the bolt pattern on the rim... in theory they should be the same, but you never know.

 

All reasonably modern Jags have the exact same bolt pattern, 5 x 108, and yes that XJ one should fit perfectly OK.