Big tires or small rims ?

[jangles]

I noticed yesterday while fixing wifes first flat on new M2S Scout that things were not as easy as I thought they should be . She has 20x4 tires and let me say , they are a B___h to change . It seems that either the tires are too big or the rims are too small . Getting it to seat properly , and II use that term lightly is almost impossible . It took me over an hour of inflating and deflating to get the tire bead half way centered and inflated well enough to keep the tire from falling off either side and beating the tire with a large mallet around the outside to do it . I have never experienced this with a 24x4 or 26x4 . Whats up with this , bad tires bad rims or ? Any majic ? Tires seem too BIG for rims .

 

[jangles]

No dont need a tire tool with these loose fitting tires . Kendas , I hate them .

Edit

 

[jangles]

I know you don't need a tire lever with loose tires, but I was asking if you used tire lever for the tires you just changed.

I didnt need to they almost fell off the rims .

 

[legsofbeer]

Whats up with this , bad tires bad rims or ? Any majic ? Tires seem too BIG for rims .

Haven't had a problem with 26x4 kenda juggernauts, but did with a slick that I got for the rear wheel. Gotta really, really check for twisted or lumpy tube, try to get that valve at 90 degrees before you start, set the wheel down easy (can't be vertical while you inflate it unless it's mounted with bike on a work rack or upside down), every 3-5 psi added run your hands around and pinch the bead back into place all around the rim both sides at once (need long fingers).

 

[indianajo]

I ride Kenda 26x2.1", and their quality & fit has been superb. I had one MTB with wheels too small, I think it was the diamondback. Tires kept popping off the rim at inconvenient times. The schwinn roll up tires from the grocery store wouldn't fit at all. This $1300 yubabike came with wheels that were big enough, I have no trouble changing tires. Every spring ~2000 miles, and once out on the road when I tried to get by with a used tire from the Pacific Quantum. No more used tires, I had to push that flat 6 miles with 40 lb of groceries on it.
2nd legs of beer procedure. I always inflate the tube once, then deflate and reseat the tire if crooked or the stem crooked. Then reinflate. Never just inflate once; i've had tubes pop because it had a kink in it.

 

[jangles]

I'm wondering if it's the quality of the rims that M2S uses ? I remember now that the front tire rolled out when she first got it and I had similar problems but not this bad . It's been fine since . Maybe just the size ?