What can I expect?
 

I bought a used base (but incredible blue) 2017 with 19k miles. It just crossed 20k miles.

The question, it has original tires. How long can you expect them to last? They still look good. My 2006 350Z tires needed to be changed by 20k and so did my 2014. These OEM tires still look good!

I live in the Midwest (St. Louis) and even if last year did not get much snow, ice or rain in winter, it's possible. I don't know if I should just stay with the tires, get winter tires or all season of wait till Spring and get summer ones.

I get 15K to 20K in the rears. Fronts seem to last forever.

Zeebabar,

It really comes down to how you drive the car.

In my case, the Z is just a toy that comes out on nice sunny days, as I have 3 other cars to drive. I never race the car, as my tomcat days are long past. I have nothing to prove. I just enjoy driving a convertible that not everyone else has.

Personally I wouldn't even consider driving a car with this lack of ground clearance, the width of its tires, and the rear wheel drive, in our snow and ice winters of Southern, Ontario, Canada.

My daily driver is a winter tire equipped Subaru OutBack with all wheel drive. Its like being crazy glued to the road.

That said, if you're careful, and have winter tires installed, it may be possible to get around in the winter. But it will test your driving skills and patience. I for one wouldn't even consider doing so.

As far as which tires to buy for winter, I'd buy the best all season radials that you could get, unless you can spring for two sets for the car ... dedicated winter tires and dedicated summer performance tires.

Just my opinion.

Have it measured by a shop. 20k on OG tires is pretty good.

The factory tires are summer high performance tires. They will get you absolutely nowhere in even the smallest amounts of snow.
Years ago I went to a show in Syracuse, ny early spring. factory rubber was still on the car. I was 1/2 mile from the event at my hotel. We had a freak overnight snow of about 2 1/2 inches, and I was stuck in the parking lot for a few hours until they plowed roads clear, and the sun beat up the parking lot.
Don't even risk it....

Bite the bullet and get a set of dedicated snow tires if you plan on driving it when the high temp is below 50 degrees. It's as simple as that. The stock summer tires are useless below those temps because the rubber compound hardens up and you won't have traction. The Z is my daily so I have a set of Blizzaks I put on and I drove it all last winter with no problems. Ground clearance is the true issue, though, so I work from home if there's a moderate amount of snow in the forecast.

I think some people run all-seasons on it and have no issues, but I felt better knowing that I had two separate sets of tires that were proven to be optimal in the conditions I was running them in.

On a lighter note, I get a discount on my HOA fees during the winter because I help plow the roads out with the chin spoiler.

I'm in a similar spot, with factory tires on my 2016. My car is a daily driver. While Atlanta does not always get snow in the winter (okay, more often not), it does get cold. The summer tires are firm and have poor traction under 50F. Next month I'm buying Michelin A/S 3+ shoes.

this fampous study seems to suggest that if it does not snow, summer tires are better in wet or dry conditions and all season tires are pointless, get either winter and summer tires or just park your car during snow and go with summer tires all year round.

https://www.edmunds.com/car-reviews/...vs-summer.html

Yep that's why I call them no season tires. Summer tires do suck when it's really cold below freezing, even if it's dry. The rubber gets way too hard and there is very little grip, at least from what I'm used to.

really depends on your driving and wear the tread depth is now... my originals went about 25K, then went with Michelin PSS which then lasted about 25K and now with Michelin Pilot 4S, the care is rarely driven in the cold....

Get winter tires. It's a lot less stressful knowing you have them if a popup storm ever happens. I've driven through lots of snow with my z and winters on. It performs the same as a fwd w/ winter tires as long as you are easy on the gas.

Even when you're goofing off it is easy to control. I would never drive this car in the northern winter with summer tires.

Problem is that, at most, there would be snow on the roads about 12-15 days in the entire winter. It's cheaper to just take Uber or stay home or use my wife's car on those. Yes, there are temps under 40 degrees but the summer tires can handle those.

After getting stuck in a warm (low 30s, upper 20s) the first year that I owned my car, I bought wheels and snow tires (228/50-18) from TireRack and drove 8 winters on them.

The car is actually quite fun in the snow if you have good tires. Don't go for All-season. Get full snow tires.
I still have a couple of the original snow tires that I bought in January of 2010. The only reason that I don't have all 4 is that I got assorted sharp pieces of metal in a couple of them.

IIRC I got about 27,000 on my original summer tires. Buy a tread depth gauge.