Bias ply or radial tires on a hack?
jm76
Posted 8/15/2016 5:33 PM (#90338)
Subject: Bias ply or radial tires on a hack?


Member

Posts: 8
0
Location: Houston, TX
I'm moving a Dnepr sidecar to my 2012 Bonneville (mag wheels) and want to put dual sport tires on it for a little bit extra traction on gravel and dirt roads but the options in bias ply tires for my rims is rather limited...

The Bonnie has a front 17x3.0 and a rear 17x3.5 and if I can source it I'm going to put a 17x3.5 mag rim on the hack as well. I want to stay tubeless.

The stock tires are 110/70-17 (front) and 130/80-17 (rear) and I'm thinking about moving up to front 120/70-17, rear 140/80-17 or 150/70-17 (might be too wide for the rim) and a 120/70-17 on the hack.

The problem is I'm not finding a lot of bias ply tires in those sizes and when I do I have to mix and match. (However, there is an ample selection of dual sport radials that fit.)

So, based on the above, how much of a difference would I see running radials instead of bias ply tires?

I'm guessing the radial vs bias ply argument in sidecars is similar to the same argument in offroad vehicles in which the sidewall strength and stability make a lot of difference. Is this so?

Thanks,
Jim


Edited by jm76 8/16/2016 4:53 PM
Top of the page Bottom of the page
CCjon
Posted 9/12/2016 7:28 AM (#90727 - in reply to #90338)
Subject: Re: Bias ply or radial tires on a hack?



Extreme Veteran

Posts: 329
10010010025
Location: NWHouston
Jim,
Welcome to the forum. The rooms pretty quiet... only crickets...lol.

I'll jump in and make a wild comment that I may live to regret, hadn't really looked at or was concerned about bias vs radial tires on my rigs. Was just happy to find something that fit. If it wore as expected, I bought more. If not, tried something else.

Since you are here in the Houston area, are you going to the area sidecar rally in Bunkie, LA on Sept 29 - 31? More info is posted in the Other Events and Rallies section here. Several area riders are going.

Shoot me a PM and we'll get together for a coffee. Am in the NW corner of the county, Cypress.

CCjon


Top of the page Bottom of the page
jm76
Posted 9/24/2016 3:54 PM (#90841 - in reply to #90727)
Subject: Re: Bias ply or radial tires on a hack?


Member

Posts: 8
0
Location: Houston, TX
Thanks for the feedback CCjon and the invite to the Bunkie event. I'll have to pass on the Bunkie event because I plan to do the Nun Run on Oct 1 but I'll definitely contact you in PM (I'm outside downtown near the soccer stadium).

I ended up going bias ply because they fit the narrow rims best and finished mounting the car this week.

Still some little things to do like fender, brakes and turn signals, remove the BMW badge on the car, and a new tire on the sidecar but here it is:





Jim
Top of the page Bottom of the page
davet
Posted 9/25/2016 6:11 PM (#90842 - in reply to #90338)
Subject: Re: Bias ply or radial tires on a hack?



Veteran

Posts: 220
100100
Location: Rochester, Michigan
The Bonneville/Dnepr combo looks very good. Nice job.
Top of the page Bottom of the page
CCjon
Posted 9/25/2016 9:01 PM (#90846 - in reply to #90842)
Subject: Re: Bias ply or radial tires on a hack?



Extreme Veteran

Posts: 329
10010010025
Location: NWHouston
Jim, you have good looking rig going there. Don't remember see that tub in Houston, where did you find it? Both the bike and the tub are looking good.

Did you make your own sub-frame?
Top of the page Bottom of the page
jm76
Posted 9/25/2016 9:52 PM (#90848 - in reply to #90338)
Subject: Re: Bias ply or radial tires on a hack?


Member

Posts: 8
0
Location: Houston, TX
The subframe was purchased from DMC Sidecar in Washington.

The tub was attached to my R90/6 previously:



Top of the page Bottom of the page
Reardan Tom
Posted 9/26/2016 8:56 AM (#90855 - in reply to #90338)
Subject: Re: Bias ply or radial tires on a hack?



Elite Veteran

Posts: 1164
10001002525
Location: Reardan, WA
Sweet rig!!!
Top of the page Bottom of the page
CCjon
Posted 9/26/2016 9:10 AM (#90856 - in reply to #90338)
Subject: Re: Bias ply or radial tires on a hack?



Extreme Veteran

Posts: 329
10010010025
Location: NWHouston
Okay, now I remember seeing your CL ad for the bike only. Thought you had sold the sidecar to someone else. Glad you decided to keep it and mount on the Bonnie.

Top of the page Bottom of the page
jm76
Posted 9/26/2016 9:18 AM (#90857 - in reply to #90856)
Subject: Re: Bias ply or radial tires on a hack?


Member

Posts: 8
0
Location: Houston, TX
Nope, definitely kept the chair. I enjoy 3 wheels more than 2 to the extent that I put almost no mileage on the Bonnie the past 2 years. Yet I prefer the look and ride of the Bonnie over the R90/6 so the only logical thing was to move the chair and try selling the BMW.

So far I'm sure I made the correct decision for me - the Bonnie is much more fun as the tug.

Jim
Top of the page Bottom of the page
jwshort
Posted 9/26/2016 2:58 PM (#90862 - in reply to #90338)
Subject: Re: Bias ply or radial tires on a hack?


Elite Veteran

Posts: 817
500100100100
Location: Rapid City, SD
Hi Jim:
I have to jump in and say that I found that bias ply tires worked better on my K1100/Motorvation rig. The radials eventually cupped the side of the front tire and made noise and vibration. I don't know if this is a usual occurence on sidecar rigs, just my experience.
Top of the page Bottom of the page
rodder
Posted 11/25/2016 6:52 PM (#91514 - in reply to #90338)
Subject: Re: Bias ply or radial tires on a hack?


Member

Posts: 33
25
i was due for tyres on my 2012 mag wheeled bonnie + opted for bias, they are stiffer as i noticed riding solo. got a not yet mounted motorvation spyder formerly on a 2003 bonnie T-100. hopefully this winter i will get it hooked up!!!
Top of the page Bottom of the page