dark side? abs friendly

[nolton]

@nolton
Any tire is designated by cross section length, sidewall aspect ratio (percentage) and mounting diameter. A Stone Excedra Max is 240/55R16 means 240mm cross section width - the 55 is the sidewall aspect ratio (55%) - the "R" is radial - the 16 is wheel diameter in inches. Go figure this! Inches and millimeters used together?! WTF???

If you multiply the section width value by the sidewall aspect ratio you get the sidewall height. So, 240 X .55 = 132 mm 132 mm X .03937 (conversion factor for mm to inches) = 5.2 inches.

Now since there are two sidewalls in the total wheel diameter take 5.2 X 2 = 10.4 inches. Add this to the 16 inch diameter and you have a 26.4 inch total diameter.

Let's compare to a stock Metz 240/50R16. 240 X .50 = 120 mm. 120 X .03937 = 4.72 inches X2 = 9.45 inches + 16 = 25.45 inches total diameter or .95 inch smaller in diameter than the Stone.

Calculating a car tire is the same. 225/50R16 would be 225 X .50 = 112.5 mm X .03937 = 4.43 inches X 2 = 8.86 inches + 16 = 24.86 inches total diameter.

Hope this helps and I didn't screw up any math.

No that don't help at all!

 

[nolton]

Ok.
This is what I wanted to help others with.
If you weigh 220 and ride a darkside on a Rocket, the psi is 28. If you add a passenger or luggage that weighed 200 lbs then the psi is 36 psi.

That is the math that I'm looking for.
Lbs to psi.

 

[HansO]

Nolton the pressure I ran solo and also with my lightweight wife was 28 psi on the Federal 595 245/50/16 tyre (the Toyo Proxes R1 245/55/16 needed 4 psi more and would not recomended it) when adding luggage I found an extra 4psi was all I needed as while towing my 500kg trailer which put another 60kg on to the rear of the bike I was not pushing as hard and more interested in the comfortably smoother ride offered by the DS, I may also point out that while the Bridgestone gives a softer ride than the Metz it is still a harder ride than a DS and I am not putting the Bridgestone as I am very impressed with its performance and the mileage has been out standing, in fact I am so impressed I bought a second rim, as towing on the bridgestone causes excessive centre wear thus shortening the life prematurely, so I will switch between the two depending on whether I am going on a long ride without or with the camper

 

[ROCKETHEAD]

So why do I still pull the same mph at same rpm going straight or through turns at 34psi solo with luggage?

 

[1olbull]

Ok.
This is what I wanted to help others with.
If you weigh 220 and ride a darkside on a Rocket, the psi is 28. If you add a passenger or luggage that weighed 200 lbs then the psi is 36 psi.

That is the math that I'm looking for.
Lbs to psi.

I thought you wanted to figure comparative tire size, diameter and side wall.
OK - I see now. You want dope on the Bermuda Triangle of car tire air pressure.
I be the wrong dude for this.

 

[CanberraR3]

I will ask my serious question when your not in a combative frame of mind, mate.

You're kidding me. You asked for my thoughts on what effect car tyres might have on ABS, mathematically speaking. I did that and you posted some smart arse response that it wasn't what you wanted. We all then had to put up with Hanso's dribbling on as per usual completely off topic and totally self serving, again as per usual, childishly mocking me in the process for trying to offer some objective input. There are people who want to know both sides of the argument and are seeking information so they can make a decision. Not everyone's a convert and not everyone has bikes like yours without ABS. That was the point of the thread after all. Wasn't it?

Now you're saying I'm a combative mood. Well I wasn't actually and if you would take the time to read my posts you'll see that's the case, but NOW I ***ing well am and you can *** off.

Ok.
This is what I wanted to help others with.
If you weigh 220 and ride a darkside on a Rocket, the psi is 28. If you add a passenger or luggage that weighed 200 lbs then the psi is 36 psi.

That is the math that I'm looking for.
Lbs to psi.

You actually think there's a formula for that don't you? Don't all you people always say it's a personal thing? Wow. Lost for words.

 

[nolton]

You're kidding me. You asked for my thoughts on what effect car tyres might have on ABS, mathematically speaking. I did that and you posted some smart arse response that it wasn't what you wanted. We all then had to put up with Hanso's dribbling on as per usual completely off topic and totally self serving, again as per usual, childishly mocking me in the process for trying to offer some objective input. There are people who want to know both sides of the argument and are seeking information so they can make a decision. Not everyone's a convert and not everyone has bikes like yours without ABS. That was the point of the thread after all. Wasn't it?

Now you're saying I'm a combative mood. Well I wasn't actually and if you would take the time to read my posts you'll see that's the case, but NOW I ***ing well am and you can *** off.



You actually think there's a formula for that don't you? Don't all you people always say it's a personal thing? Wow. Lost for words.

As far as I can remember you and have never had problems joking with each other.
Yes, I was being a smartarse and meant nothing personal against you.

I guess I hit a nerve.

 

[nolton]

I thought you wanted to figure comparative tire size, diameter and side wall.
OK - I see now. You want dope on the Bermuda Triangle of car tire air pressure.
I be the wrong dude for this.

That's why I asked. I couldn't figure anything out so I thought someone else may.

So I guess this makes me stupid now.

 

[CanberraR3]

You've changed Nolton, and the "I was joking" defence doesn't quite cut it. That little sting in the tail doesn't help either.
2 people were really trying to be helpful here and all you could do was dismiss it. Laugh and/or wet your pants if you like.
Hanso of course hasn't changed (sadly).

 

[HansO]