Tyres - Fitted and Spare Different

[BillyCasper]

Good afternoon,

My 4WD diesel has four 215/65R/16 tyres on alloy wheels. I've only just looked at the spare and it is a 195/70R/15 on a steel wheel.

My queries are:

In the event of a puncture, is a 195/70R/15 acceptable or not?

If yes:

Is there a distance limit (i.e. get to a tyre fitter quickly)?

If no;

Does the spare tyre need replacing or both spare tyre and wheel?

Will a 215/65R/16 tyre/wheel fit in the spare mounting bay?

Thanks in advance for any answers or advice, regards and enjoy the rest of the bank holiday.

[francophile1947]

No, they are not compatable. Difference in diameter is 4.89% and should be less than 1%. This difference could ruin your viscous coupling.
Spare tyre will need replacing with a 215/70 x 15.
16" wheel should fit in the spare bay.

[BillyCasper]

John,

Many thanks for your time taken in getting back to me. Can I just check one thing, did you mean to say 215/70/15? Or is your rationale that a 215/70/15 spare is in tolerance with the main 215/65/16s?

Regards,

[francophile1947]

Yes - 215/70 x 15 will fit your spare wheel and will give a diameter very near to your alloys wth 215/65 x 16 tyres.
You can check for other suitable sized tyres here http://www.tyresave.co.uk/tyresize.html

[BillyCasper]

Many thanks again John.