Long story short I'll be heading up I-15 to SLC on the 23rd and back on the 28th. I'll have to do it in my car because my Tacoma is in Louisiana. Do they generally keep I-15 clear of ice? Are there any sections south of SLC They require chains on?

Long version I have been on an extended business trip in CA. Instead of going home for Christmas I'm going to visit my daughter who can't head home for the school break due to work. I have my Q-50 with me which is less than ideal for winter driving (rear wheel drive with high performance AS radials - Bridgestone Potenza RE97AS - apparently very poor ice and snow performance).  

Any help appreciated

If it’s not actively snowing you’ll probably be fine. If it is, yes, they plow, but things can get dicey. Get chains.

As long as it’s not an active storm you should be fine..

Only thing that would concern me are your tires..even more so than being RWD.

I had an all wheel drive performance car that had summer performance tires like yours.  I hit a storm with it one time and I could not believe how bad it was even with AWD.  And I’m a very experienced snow driver.  

It’s those tires that could give you grief, not so much the RWD.  

Just gonna be a roll of the dice sounds like.

To add there are a handful of higher elevation spots between st George and SLC that can get pretty bad during a storm.  They get them cleared fast but if it’s snowing they get covered in snow pretty quick.

UDOT has traffic cameras you can look at to see exactly what the roads look like where you're planning on driving. I've found it generally useful when making longer trips this time of year.

Thank you, ordered some chains and will keep an eye on the cameras.

I think thats a solid plan as lomg as you have good tires

Yeah. The tires aren't so good. I'm just going to fly. Hopefully the car is still at LAX when I get back