Psychopasta
Been Around the Block
When we state a wheel size of say 19", is that measured across the center from the edges of the tires or the edges of the rim?
Wheel size
- Thread starter Psychopasta
- Start date
TresCuatros
Active Member
It's measured from the bead-seat to bead-seat, also known as tire-mounting-surface.
Psychopasta
Been Around the Block
Thanks! I presume it's from the top of the bead-seat surface?
More or less, but why do you need such a precise measurement?
If your rim is around 19", it's a 19 inch rim. There are 17, 18, 19, 21, 23 inch rims typically, and 23 is a rare bird used mostly on early Honda XL250's.
I've never encountered a 20 inch rim outside a BMX bike, or a 22. So odds are if your wheel is around that 19 inch mark, it's a 19 inch rim.
Front or rear will help narrow it down if you're not sure either and vintage. 18 inch fronts are not typical, although they do exist like on my wife's old TU250X.
If your rim is around 19", it's a 19 inch rim. There are 17, 18, 19, 21, 23 inch rims typically, and 23 is a rare bird used mostly on early Honda XL250's.
I've never encountered a 20 inch rim outside a BMX bike, or a 22. So odds are if your wheel is around that 19 inch mark, it's a 19 inch rim.
Front or rear will help narrow it down if you're not sure either and vintage. 18 inch fronts are not typical, although they do exist like on my wife's old TU250X.
JerryAssburger
Been Around the Block
There is THIS webpage, which tells a person almost evrything they would want to know about tire sizes... VERY handy.
https://www.tacomaworld.com/tirecalc
https://www.tacomaworld.com/tirecalc
Psychopasta
Been Around the Block
Thanks all! Case closed
