[OXO cube]

hi guys 
i received this jaguar in a bundle of 1/43 cars 
i have no idea about HO stuff
so any info on this car would be gratefully received
this car seems to be in good order , the motor runs fine and the lights work 
but it is missing 1x rear tyre
and although i may never be used it is annoying me 
where would these be available and are they a standard size / compound etc 
or would it be easier to cast a urethane one