Topic: Road racers what tires are you using for your CB750?

[andy750]

I ended up getting the BT46 thanks to the feedback here. For the CB750 I run them at cold psi 32 front and 34 rear -  do ride on the more spirited side. So far very happy with them but only tested in the dry. Loom very similar to the BT45s.

[newday777]

They are fine on my 750, but the rear is showing wear after 1500 miles.

You didn't say what tires you are running?
How much wear are you having after 1500 miles???
Pictures?

[Stev-o]

Some folks feel that is a pretty mushy feeling and you get a better feel around 32-37psi...

I like the higher pressure especially in the front tire, typically 38 lbs, I think it gives more responsive handling.

The info in the manual is for tires with tech that is 50 yrs old, Bridgestone recommends max pressure of 41 lbs....

https://www.bridgestonemotorcycletires.com/content/dam/motorcycle-tires/images/products/battlax-bt46/BT46-product-brochure.pdf

[TheHulk]

Wow 41 PSI? Seems rock hard. If I remember correctly the CB 550 manual calls for about 26PSI in each tire. Since I'm not racing or pushing too hard, think that will be ok? Or should I increase pressure?

[M 750K6]

They are fine on my 750, but the rear is showing wear after 1500 miles.

You didn't say what tires you are running?
How much wear are you having after 1500 miles???
Pictures?

Post #3

[Stev-o]

Wow 41 PSI?

Max pressure!     I'd start at 32 and go from there....

[PeWe]

Honda recommended higher pressure on later bikes than the earlier.

CB750 Shop manual K6
Front:  32PSI / 2.2BAR
Rear:  40 PSI / 2.8 BAR

Probably due to newer tire designs.  1976 is old today

Stock setup
Front: 1.85" rim 3.25-19 tire
Rear: 2.15" rim. 4.0-18 tire
Wider 120-18 tire will get bad handling rather quick, flat .

My K6 has alu rims.
Front: 2.15" rim, 100/90-19 tire
Rear: 3.0" rim, 130/80-18 tire.
I fill a little more: 2.3/2.9-3.0 BAR

Work fine.

[PeWe]

My K2 got new tires a few days ago.
Stock size rims and tires 3.25-19/4.0-18

They felt too hard so I had to reduce to the earlier recommendation.
The old bad tires did not feel hard with the higher pressure.

My first thought was run-out. But I measured without tire and after tire assembly to make sure both rim and tire are right.

** Sustained high speeds ***
Front 32PSI / 2.2BAR
Rear  34PSI / 2.4BAR

*** Normal speeds ***
Front  28PSI / 2.0BAR
Rear   30PSI / 2.1BAR

Tires are same model as my K6 has. Michelin Classic road. The difference is the rim and tire width.

I start with  "Sustained high speeds", refill when under "Normal speeds".


So, tire model and size make a difference what pressure to use. It must be comfortable.

I have felt this before with other tires when using higher pressures guys on this forum  recommended. Mine became too hard, not comfy.

[Tracksnblades1]

Has anyone tried the Continental Road Attack 4 tires..?

The overweight twin shock CB1300 was giving the overseas crotch rockets a run on the older Road Attack 3’s..

🤔