Tyre Size- Can I Go Upto 195/65/15?

[hora]

Currently on 185/60/15's. Gives an overall diameter of 603mm

195/65/15's gives an overall tyre diameter of 634mm.

I know about adjusting to account for speed/speedo difference with a satnav.

However will I have enough clearance in the arch and on the depth?

[minidoughty]

that's too much of a difference for speed etc. however they should fit in the arch.

try 195/60/R15 or 195/55/R15 they are a closer overall diameter to your standard wheels.

[alfiejts]

In theory - as you go up a size in width, you should approximately reduce the profile by a size, so to go from 185 to 195 you should reduce from 60 to 55 or 50....

Stock Yaris tyre sizes were 175/65, 185/60 and 195/55 or 195/50.....