Hello,
My car calls for winters in 245 50 18 …. But I do have set of tires pretty much new … from another car that are 245 45 18 ?
Beside the speed being off … do I risk any damage to awd (x-drive) system or any other issues ?
Thank you
Running wide tires with small aspect ratio in winter is not a good thing.
Wide tires with short sidewall don't bite into deeper snow as good as narrower tires with higher aspect ratio.
Using tires with short sidewall in winter also leaves you vulnerable to wheel damage if you run over potholes which are not as visible as they are in the summer.
For winter I have a second set of wheel/tire combo with 15" steel wheels and 65 aspect ratio winter tires. Works really good in snow.