This rear wheel drive car was essentially un-drivable in snow with the all season tires we had on it. Only had one small snow storm since putting these tires on - but clearly vast improvement. Tested on very steep & curving road and made it with no problem - just some very slight spinning - on very steep section - but kept going. Would not have made it up said road at all with prior tires. Have same tires on my Mazda Speed3 and they are even better on that front wheel drive car - will pull thru snow even when touching front bumper & dragging bottom of chassis. Dry weather performance on the Mustang was no worse than the prior all season tires. Obviously not as good as high performance summer tires I use on Speed3 - but that is the nature & trade-off of dedicated snow tires.