Originally Posted by Vintage Schwinn

The KENDA K-838 tire at $14.41 each with Free Shipping is the best tire on the market in my opinion that will turn your mountain-bike into a hybrid-road going cruiser that will do everything well IF YOUR RIDING WILL BE DONE ON PAVED ROADS! You won't find a better tire at any price, as the K-838 from KENDA provides a very comfortable soft ride. You will also find that your Mountain Bike will be significantly faster on paved roads with these K-838 tires than with Knobbies or traditional tread cruiser style tires. My 71 year old brother-in-law installed these on his lightweight hardtail Nishiki mountain bike back in early 2018.
He has ridden this K-838 equipped Nishiki in two triathlons, one in 2018 and one, just a couple of months ago in 2019. He was not slow, and was very competitive considering he was riding upright and not using a specific tri competition bike as he had in prior years. At 71, he feels that riding a purpose built, highly modified Nishiki
mountain bike, riding on K-838 Kenda slicks, is better for him and his hands and arms.
https://www.ebay.com/itm/KENDA-04700001-Kenda-Slick-K-838-Tire-26X1-95/254420545477?epid=809947336&hash=item3b3ca56fc5:g:AGgAAOS
(**see #254420545477 on the bay**)