Tire substitution chart: Where?

[theholycow]

Originally Posted by alvaro84

I don't know why the previous owner chose 165/70. Probably she just didn't care.

Availability, I imagine. It's not like tire places are stocked with loads of 13" sizes.

[alvaro84]

Originally Posted by theholycow

Availability, I imagine. It's not like tire places are stocked with loads of 13" sizes.

When I bought the winter tires, I had to pre-order anything for these 13" rims. In a quite large workshop. So my (possibly wrong) assumption was the uniform unavailability of these tires

OK, not totally uniform. I couldn't buy 4-season ones at all, not even with pre-ordering.

[cmayo]

Apologies for reviving a dead thread, but this thread still shows up near the top of a "tire size substitution chart" search, so I thought I'd provide an answer that may be what the OP was looking for.

I'd used this chart in the past and it took quite a while to find it again today, but if you enter a tire size at Ejelta.com: Tire Size Calculator, the page will chart 20 or so of the closest matches to the entered size, with diameter differences percentage and speed errors for each substitution.

It also provides a comprehensive cross reference showing width/ratio deviation from the given size for pretty much all standard tire sizes at a given wheel diameter.

Awesome tool.