I have been mounting my bike tires myself for years and have used a number of tools with less than satisfactory results.
I just mounted my new front PR4 GT Saturday and for the 1st time used the "YellowThing" bead keeper tool.
It held the bead down perfectly, I was able to tire iron the rest of the bead down easier and quicker than ever before.
I'm very impressed.
I don't remember which mag, but I saw a good write up about the YellowThing tool in either Rider or MCN.
I got it on sale for $29.95 October 2019. (link & photo attached)

I just mounted my new front PR4 GT Saturday and for the 1st time used the "YellowThing" bead keeper tool.
It held the bead down perfectly, I was able to tire iron the rest of the bead down easier and quicker than ever before.
I'm very impressed.
I don't remember which mag, but I saw a good write up about the YellowThing tool in either Rider or MCN.
I got it on sale for $29.95 October 2019. (link & photo attached)
