Last time I was out to Tahoe, you had to have either a 4 wheel drive vehicle or a set of chains to put on the car in order to drive some of the roads and to get over the passes if it was snowing sufficiently for the Hiway cops to put the chain restrictions in effect. If you didn't have chains or 4 wheel drive, there were "businesses" set up on either side of the passes that would put chains on your car for a fee and then remove them for you when you got to the other side. I'm not sure if they provided the chains too or if you had to have your own. I think the rental car companies will provide you with chains for a pretty good daily fee, if memory serves. The guy that was processing me through the checkout process when I rented my car told me to stop by Walmart and buy a set. If I needed them, they were there and cheaper than paying Hertz's fees. If I didn't use them, just allow a little extra time on the way back to the airport to stop at Walmart and return them unopened and get my money back. Worked for me as I got up to the ski resorts and back to the airport in between snow storms, so I didn't have to get the chains out. I was also lucky that Walmart happened to have the right size chains for the car that I was renting. Must be some Tahoe Bears that can fill you in better than my 10 year old experiences, but if the laws haven't changed, it's either pray that it doesn't snow when you're driving or pay for chains in one form or another or rent the SUV.