-
Also technique play a roles, so here’s what I usually do.
Fit one side of the tyres bead in first.
Inflated inner tube and fit it in, enough so it get inside the tyres.
Installing the other side of the tyres bead; start 180 degrees from valve and work your way up toward the valve both side.
When it start to get tough, deflate the inner tube, repeat, deflate etc.
When it get impossible, go back and check if all the tyres bead is sitting in the middle of the rims as well letting all the air out and push the valve inward to move the inner tube deeper inside the tyres (this prevent it from getting pinched between rims and tyres).
If all bead is in centre of rims, repeat, check and repeat etc.
If the last tiny bit still doesn’t work, then you can use the tyre bead.
Lastly, very very stupid question, if the tyres is 28c and your inner tube is 28-32, then swap for 23-28, better a little small than a little big.
edscoble-
technique
Dismissed that being the issue if 5 people had a go I'd expect one of them to know the tricks.
When fitting the second side of the tyre, put wheel on ground and 'stretch' the tyre towards the ground, so you're getting slack right at the last section. Then have SuperThumbs™ and finish the job. Also grabbing from the other side with finger tips to roll it over helps. It's easier to show this than describe it in words though.
hippy
Cheers. I've bunged a Prime order in for some of the Velox stuff.