I use this: TURTLE WAX® JET BLACK™ BLACK ENDURA-SHINE TIRE COAT KIT. I have back issues and have difficulty bending over for long times also - I pay the price afterwards.
Comes with a bottle of tire cleaner, applicator, plastic gloves, and black liquid tire coat. It's a bit messy to apply. I actually pull my wheels onto the grass when I apply this stuff as it can stain the cement if you get in on. Likewise, I mask off my wheels as it can stick to the wheels and it's a bear to get off. That said, I haven't found anything over the counter that works as well. I put 2 coats on after cleaning the tires (10-15 minutes in between coats works fine) and the tires look great for a long time (unless you scrape a curb). But if you do happen to scrape a curb, just pull out the applicator and apply some more - no need to re-clean the tire. I've had it last all summer on one of our daily drivers and it will still look pretty good after a northern Illinois winter. On the garage queen, I've had it on for 2 summers and still looks good. I'm sold.
Autogeek may have something comparable or even better (clear maybe instead of black?) but since I've found this I haven't been looking for other tire products.
For those of you that have used this product, have you found something comparable or better?