I recently picked up a pair of Michelin Pilot Sport 4's in 265/40/18 off ebay for $300 new. Now I think that is a decent deal but the problem now is that I need front tires, specifically in 245/40/18. I have seen some lightly used Pilot Sport 4's on ebay but they're the all season version and it would total around $200. Would mixing different season tires be dangerous for daily driving in rain and dry? Or should I just opt to get some cheaper summer tires for the front aswell? Thanks!

 

you should never use summer tires in winter unless you live in a warm southern latitude. If you live anywhere where the temperature drops to freezing during the night, those tires are like skis on the highway. you might not notice but in an emergency situation, they will not stop your car. no matter how big your brakes are. rain is actually safer than freezing temperatures. but neither is a good thing to do with summer tires. they are called that for a reason. You're supposed to have a second set for winter.
If having two sets of tires is not an option for you, then you can store them but you might be better off selling those tires on Craig's and buying all weathers. you'll probably turn a profit on them in the spring. just hang on to them till spring. I think they're about $350 each new?

 

No.
Doesn't matter

 

Doesnt matter if you just need something to roll on (but heed aeneas 's warning) . If youre going for driving dynamics then yeah, don't do that.

 

As was stated above, it's never a good idea to mix tires front/rear. Especially brand and use wise (winter/summer). But also stated, I agree that if you're going to use them for daily rollers, not too big of an issue. I see it all the time.

That all said, however, I would still caution you that using all season and summer combination can possibly lead to unpredictable (or uneasy) handling wet (or dry) due to the inherent breakaway characteristics of both. This means the "feel" may be different (leading to one end looser than the other) than if you have one-use, matched tires all the way around. I'm VERY picky about tires because they are the single item on a car that can make/break the ride, feel/responsiveness and handling of the vehicle.

 

I will NEVER understand the need to be cheap with tires or brakes, if you can't afford them, maybe you bought the wrong car, and I'm not saying that to be an ***.
Research the realistic cost of the car before you buy, most performance vehicles will have tires that cost a minimum of $800, unless you are buying shady stuff.