1. ## Favor for those rolling 24" 540 wheels please

Hi..

If you're running 24" Etrto 540 wheels would you do me a favor please.

Would you note which tires you are using and what they are marked as eg.( 24*1, 24* 1 3/8 & the etrto number 23-540, 25-540) and the favor is to measure the actual diameter of the wheel and tire. If the wheel tire is on the ground, what is the actual total height of the wheel and tire when inflated properly... Hope that makes sense.. thank you.

2. my schwalbe one tyres show 23 - 540

my schwalbe one tyres show 23 - 540
Thanks... interesting the Schwalbe website https://www.schwalbe.com/en/wheelcha...walbe-one.html lists them as 25-540 (24 x 1.00).

could you do me a huge favour and measure the actual/real diameter of the tyre, from the floor to the highest point of the tyre... thank you.

like this.

4. to the best of my measuring ability whist in my chair etc its looking like 59cm

to the best of my measuring ability whist in my chair etc its looking like 59cm
Measuring like this would eliminate any inflation pressure / body weight differential.
Measuring off the chair would be ideal.

6. thank you.

59cm = 23.2283"

my crazy math
calling it 23 1/4"

23.2283" + 0.0217" = 23.25" (23 1/4") = 59.055cm

0.0217 ~ (3/128" = 0.0234375") so freaking tiny amount

Originally Posted by NW-Will
Thanks... interesting the Schwalbe website https://www.schwalbe.com/en/wheelcha...walbe-one.html lists them as 25-540 (24 x 1.00).

could you do me a huge favour and measure the actual/real diameter of the tyre, from the floor to the highest point of the tyre... thank you.

like this.

7. Will, to be accurate you must also know what tire it is.
For example, I have 2 sets of 540 rims :
- 540 Spinergy with 25-540 Schwalbe Marathon+ (a bit worn maybe ): 59,5 centimers (approx)
- 540 Sun with 50-540 Kenda Wide Knobby (blue side -I hope it's not an issue) : 62,5 cm

And for my own, I measured my current rig (I have two sets of 507 rims, for better choice of tires)
- with a 40-507 Tioga BMX Power Block : 59 cm
- with a 60-507 Schwalbe BMX Crazy Bob : 63 cm

I leave you the pleasure of the metric to Imperial conversion ... You look pretty ready !

8. measures 23 and 7/8 inch. tires are the traditional grey wheelchair tires 37-540 aka 24 x 1 3/8 The angle of the camera makes it look like it might not even be 23 and 7/8 but it is

9. Thank you... More range than I would expect. just looking at the standard tires as it were.. diameter range 23 1/4" - 23 7/8" (59.0cm - 60.6cm)

So far

schwalbe one 23(25) - 540 (24 x 1.00) Diameter 59.0cm 23.22" 23 1/4"
Schwalbe Marathon+ 25-540 (24 x 1.00) Diameter 59.5cm 23.42" 23 7/16"