Wheel size mismatch?

On an Accent CRDI with alloy wheels if three tyres are 185/60 R14 and one is 185/65 R14, what kind of problems can come up?

No, this is not hypothetical. I bought a used car with these specs, and very curious about it.

Also, any possible reason why the original owner may have deliberately kept it so?

Answer from Mr. Ashish Jha in "Carwale Answers" section:

Quote.

Dear CD

I thank you on Banwari's behalf for the kind words. I am sure Ban, as Banwari is known as in the office, will be blushing!

Now regarding your query. It is not advisable to have tyres of different dimensions. In your case, the aspect ratio of the two tyres differ. Aspect ratio is basically the percentage value of the section height wrt section width. This will hamper the dynamics of the car. The tyres may wear out sooner than expected and the allignment may suffer as well. It will also have a negative impact on the steering. Just look at it this way - you are standing on a staricase. One foot of yours is on a raised platform while the other is on lower one. How will it feel? This tyre problem is similar. The section height of the two tyres are different here. Please change it to the same ratings.

Hope this helps.

Unquote.

 

Dear Mr. Jha,

Couldn't find a way to reply with "thanks" on the "Carwale Answers" section, hence here.

If you read this: Thanks so much! It helped me understand what's wrong. I found the spare wheel to be 185/60, and I've immediately exchanged it with the 185/65 one. There's a slight wobble in the steering wheel now though... guess I'll just have to align/balance them again, yes?

Thanks again for the prompt answer. And wish you the best!

Dear CD,

I am glad that the answer was proved helpful. Yes, do get the allignment as well as balancing done and you should be settled for good.

Cheers!