My 1971 Yamaha AT1-c had new tires put on about 20 years ago. They still have plenty of tread but when riding I can almost feel the knobs while on the street. This bike has been fully restored and won't see any off road use at this point. I'm thinking it is time to swap out the tires. What kind of tires is everyone running? I would like to keep it stock looking as much as possible, but have decent on road characteristics. 

www.cyclegear.com/tires/shinko-sr-241-series-tires

I saw these tires and they remind me of the original ones. Any one running them? 

I put that model Shinko’s on my DT3 250. I have no complaints. Sounds like you and I treat our bikes the same way, IE, garage queens… The sidewall says to run around 32 PSI cold, so I do and they feel fine on the street.

I have the 241's on my AT1 also. They seem to roll fine on the street.

I read one review that said it was a radial tire. Is that true? I would maybe try to change these out myself vs. paying a shop to mount them.

I don’t think they are radials. I changed mine easily with a set of motion pro irons and Yamaha tire mounting spray. I was skeptical of the spray but decided to try it and it does help the tire slide on easier…

They aren't radials, and do look very similar to stock Yokohama Trail Sport tires. I bought mine around a year ago and have 2K miles on them, all on-road. I had been running close to or slightly above the PSI suggested in my CT-1 owners manual for "on road", 14 front, 18 rear, and the steering was a bit heavy, and at speed was slightly wobbly. Since MarkT posted the updated Yamaha "on road" PSI suggestion for 125/175s yesterday, I have the cold PSI at 22 front and 26 rear (2 PSI below the recommendation). After a 10 mile ride at 70 degrees F, they were at 24/28 and handle MUCH better. Cornering is much steadier, and no wobble at up to 60 MPH. I changed mine with a pair of 9" tire irons, and a spray bottle with diluted dish soap. Not that hard at all. Even though the rims were rusty on the exterior, the interior looked factory-fresh.

The soap mixture is good… 50/50… I applied with a brush… AND since it’s summer, put them out in the sun before putting them on… watch a couple vids… not hard to do.
Sneezles61

Thinking back, I actually used an old dish brush with ~50/50 dish soap and water. The kind that has soap in the handle, which is dispensed by pushing a button.

Since my spokes and rims were polished about 7 years ago this motorcycle sees little to no water. I don't even wash it. I use bucketless car wash and rags. I'm probably a bit paranoid, but it is just so nice now.