Why?It will if he has to brake or manoeuvre violently and and vehicle stability or braking systems don't work optimally because the maths being sent from that wheel is all wrong. Either the police or insurer (or both) will repeatedly smash the soles of his feet with a rubber hose.
This is sage advice & should be strictly followed.I would say that odd size tyres should be on the back only. You would have to swap a back wheel to the front to even the sizes up. Odd sizes on the front would make the steering/tracking quite odd.
AgreeThis is sage advice & should be strictly followed.
Claptrap, have you ever tried to drive a FWD car with different wheel sizes?It might be kinder to the diff on a FWD drive car to put it on the rear.
But it's kinder to your underpants to put it on the front on the basis that understeer is a lot less likely to send you to the afterlife than oversteer.
As a limited use spare, yes that will be fine, providing it goes over your brake discs.
Space savers aren't the same circumference, designed as a get-you-home only. As long as you view this in the same way, the 5.5% smaller circumference won't matter.
Data from putting both in here:
https://tiresize.com/comparison/
They are the nearest approximation, you're right, but not the same, by definition, hence the regulations that apply.The space savers I've had have all been pretty much the same circumference, just a lot narrower. They've all been on same diameter rims in steel instead of alloy but narrower, so they don't use as much height in the boot or under the car.