Spare tyre question

[crazyspoon05]

Howdy all

Just went out to the car and noticed one of my rear 235/45R17's is flat as a tack (huge cut in sidewall)

I've got a 215/65/R14 spare and according to the online Miata tyre size calculator there's 8mm difference is diameter

Obviously not going to be driving a great deal on the 'temp' rim but just seeing if this is not going to damage axle and or diff

[m1lky]

Are you sure it's not a 15?

Should be fine temporarily I wouldn't do it for too long though

[EDGE3]

the spare will be the original factory size wheels so it will be ok but dont leave it on there to long because you now have 17's on it.

[edals]

Well New cars come with those ridiculous space saver ones that are the like 2" wide and 10" Diameter lol, Work mate had to use it on a car with 18s on, So must be ok to use just for a spare for a short trip to repair a puncher.