Switching to smaller wheels in a Dodge Nitro

My Dodge Nitro is shod with 245/50/20 tyres but at £300 per tyre I'd like to put a different size of wheel and tyre to make it more cost effective. What size can I downsize to without impacting the ABS or handling?

Asked on 16 September 2012 by rockyrider

Answered by Honest John
We simply son't know which wheels will clear the brakes and which tyres will give the same rolling circumference. But as a point of reference (same manufacturer), the current Grand Cherokee has 265/50 R20s on the Overland and 265/60 R18 on the Limited.
Similar questions
I had a puncture in my Nissan Juke. The owners handbook states the spare wheel is under the floor in the boot. No spare wheel is there, only a compressor and a bottle of sealant - which did not work. If...
Why is my new Honda Jazz EX CVT not remotely like the car you reviewed on your website? The ride in the back is atrocious.
My Jaguar XF doesn't have a spare wheel. I would like to buy a 'get you home spare wheel' and jack to go with it. I'm having problems finding one at the right price. Any suggestions, please?
Related models
Looks tough and five-seat interior is practical.
 

Value my car