Reply
 
LinkBack Thread Tools
post #1 of 15 (permalink) Old 05-01-2008, 02:12 PM Thread Starter
Junior Member
 
Join Date: Mar 2008
Location: Santa Rosa, California, USA
Posts: 11
Post imported post

I ordered a rear tire for my GL1800. The site said I could use a R60 or R70 which they called a high profile. I chose the R70, installed it and now I am told it is the wrong tire and is for the lighter Valkrie. I was told the weight rating is too low and the profile is too flat for the GL1800. The R70 is actually rated 70lbs heavier and has a more rounded profile. The local Honda service says it's the wrong tire... but we don't know why. Bridgstone doesn't answer e-mails. Does anyone really know the differecne in tires? Thanks Geo.
milk man is offline  
Sponsored Links
Advertisement
 
post #2 of 15 (permalink) Old 05-01-2008, 05:38 PM
Senior Member
 
Join Date: Jan 2008
Location: Lexington, South Carolina, USA
Posts: 5,502
Post imported post

The first thing is tires even of the same size can carry different sidewall ratings. So that will be stenciled on the tire somewhere. You do want a tire that has a pretty high load rating.

The 60/70 thing is where the profile(height of the sidewall) is 60 or 70 percent of the width of the tire. So actually the 70 is a bit taller.

What it can affect is the suspension and handling of the bike. A 60 tire is the correct size for the 1800. With that the suspension works with the tire. Will a 70 drastically alter that....do not think so it is not that much.....but I have found with the stock tire and setting the rear hydraulic shock at 15(that is my preference) it balances the bike and seat angle just right. If I were to go to a higher profile tire....then to get the correct seat angle I would have to lower the shock setting.....therefore creating too soft a ride.......

Hope this helps........check the side wall rating.....if it compares to 630/ 700 pounds or so the tire is not dangerous......but may effect the suspension. Kit

The 1800 is my bike. The very best motorcycle ever made. I was enthralled with my first test ride on this machine. It is a great bike. A crotch rocket with storage bags.............As for oil I use the slick kind, and I like round tires, but as of late I have found square ones work best on the rear. Pirelli Eufori 195/55/16 @ 32 PSI
Kit
Kit Carson is offline  
post #3 of 15 (permalink) Old 05-02-2008, 11:13 AM
Piled Higher and Deeper
 
sandiegobrass's Avatar
 
Join Date: Aug 2006
Location: Rancho Cucamonga, California, USA
Posts: 4,492
Post imported post

"wrong tire" is relative to the factory recommendation, but given the load rating is equal or greater, I personally wouldn't worry about it unless there are other considerations (like bike warrenty).

The R70 tire will make the rear of the bike stand 1/2 taller(the tire is 1" taller) and the engine will turn about 4% slower for the same bike speed when compared to a R60 tire.... Unless someone gave me a better argument (than my own), I'd just wear it out, thenchooseanother or the oneI like better for the next one.. SDB/Jim

AKA "Jim"
---------------
Have a Gold Wing? Please take the
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
!
---------------
If a man speaks in the forest and there is no woman to hear him, is he still wrong?
---------------
2000 GL1500SE
1983 GL1100I
---------------
But formerly San Diego, Terra Haute, Aiken, Oak Ridge, Tonopah NV, Pasadena, and probably going back to Aiken..)
sandiegobrass is offline  
post #4 of 15 (permalink) Old 05-02-2008, 12:26 PM
Senior Member
 
wexy's Avatar
 
Join Date: Jul 2004
Location: Blackwater, County Wexford, Ireland.
Model: GL1800
Posts: 11,737
Send a message via Yahoo to wexy
Post imported post

Another good thing is ,it will be easier to get on the main stand

CIARAN (pronounced Keeron)
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
yes it is Gaelic
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
wexy is offline  
post #5 of 15 (permalink) Old 05-02-2008, 09:56 PM
Senior Member
 
jackjohn's Avatar
 
Join Date: Mar 2005
Location: Richmond, Texas, USA
Model: 1982 GL1100I; 2012 GL1800A
Posts: 2,047
Post imported post

As Wexman says it goes on the center stand easier and according to my GPS, itimproves the accuracy ofthe speedometer.

Jack
2012 GL1800A
2004 GL1800A Sold
1982 GL1100I
1975 GL1000 Sold
1974 CB450 Sold
jackjohn is offline  
post #6 of 15 (permalink) Old 05-02-2008, 11:33 PM
Piled Higher and Deeper
 
sandiegobrass's Avatar
 
Join Date: Aug 2006
Location: Rancho Cucamonga, California, USA
Posts: 4,492
Post imported post

jackjohn wrote:
Quote:
.... according to my GPS, itimproves the accuracy ofthe speedometer.
Interesting... not wanting to hijack the thread, but a quick question??? where is the speed sensor on an 1800???

AKA "Jim"
---------------
Have a Gold Wing? Please take the
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
!
---------------
If a man speaks in the forest and there is no woman to hear him, is he still wrong?
---------------
2000 GL1500SE
1983 GL1100I
---------------
But formerly San Diego, Terra Haute, Aiken, Oak Ridge, Tonopah NV, Pasadena, and probably going back to Aiken..)
sandiegobrass is offline  
post #7 of 15 (permalink) Old 05-03-2008, 04:36 AM
Senior Member
 
Join Date: Jan 2008
Location: Lexington, South Carolina, USA
Posts: 5,502
Post imported post

On an 2008 1800 the sensor is located on the output shaft, right side of engine, so the sensor works on the rpm of the output shaft. Kit

The 1800 is my bike. The very best motorcycle ever made. I was enthralled with my first test ride on this machine. It is a great bike. A crotch rocket with storage bags.............As for oil I use the slick kind, and I like round tires, but as of late I have found square ones work best on the rear. Pirelli Eufori 195/55/16 @ 32 PSI
Kit
Kit Carson is offline  
post #8 of 15 (permalink) Old 05-07-2008, 07:08 PM
Member
 
Join Date: May 2007
Location: Rancho Cordova, California, USA
Posts: 58
Post imported post

Before finding this topic I posted one about using a 70 series instead of a 60 series. One of the comments here is about the weight rating. The original Dunlop D250 60 series is rated at 827 lbs. The original Bridgestone G704 60 series is also rated at 827 lbs. The Dunlop E3 70 series is rated at 910 lbs. I can't see why not use the 70 series!

Previous: 1969 Mach III, Moto Guzzi Ambassador, 1971 CB750, 1972 GT750, 1973 900 Z1, 1975 GL1000, 1976 XS1100, 1979 KZ1300...(skip 26 years) 2003 GL 1800A
rhjiii46 is offline  
post #9 of 15 (permalink) Old 05-07-2008, 09:31 PM
Senior Member
 
Longboater's Avatar
 
Join Date: Dec 2007
Location: Longboat Key, Florida, USA
Model: 07 1800 "The Beast" 100K
Posts: 1,424
Post imported post

Regarding the R70 tire for the rear, this was suggested to me as my next replacement. The performance issues already mentioned here.

One odd issue that needs to be addressed for me is the ABS system reading on the oversized rear comparing it to the standard size front tire. Is there a braking problem here? The rear will be turning slightly slower due to its increased size.

Anyone have any experience yet?

Thanks Longboater,




To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


MORE TAIL WAGGING and less barking please.

Heading for the sun set and checking the boxes along the way.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
(until the keys are taken away)
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.



Ned

Past rides:
USS TENCH (SS 417)
Yamaha 65
Honda 85
Kawasaki 125
Penton 125
Zuki 185
Husky 250
Honda VTX 1300

Enjoying Florida, come-on-down
Longboater is offline  
post #10 of 15 (permalink) Old 05-07-2008, 10:04 PM
Senior Member
 
Join Date: Jan 2008
Location: Lexington, South Carolina, USA
Posts: 5,502
Post imported post

I would think......not that I really know.....but a bike is designed to certain specs. When you go changing one thing it affects another. It would seem to me if you have an ABS model messing with the tire size would not be a very good idea. The ABS system is quite dependent upon tire rotation and speed to have both front and rear brakes to work together. Could very well mess with the computer or printed circuit board that controls the ABS system......they say nothing is truly yours until you have messed with it.....but I think in this case, best to not. Kit

The 1800 is my bike. The very best motorcycle ever made. I was enthralled with my first test ride on this machine. It is a great bike. A crotch rocket with storage bags.............As for oil I use the slick kind, and I like round tires, but as of late I have found square ones work best on the rear. Pirelli Eufori 195/55/16 @ 32 PSI
Kit
Kit Carson is offline  
Reply

  Steve Saunders Goldwing Forums > Forums > Goldwing Technical Forum

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Steve Saunders Goldwing Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Rear tire on gl1800 jturnip Goldwing Technical Forum 7 06-03-2012 06:39 AM
GL1800 Rear tire cupping Weelz Goldwing Technical Forum 20 03-21-2012 06:23 PM
Gl1800 rear tire ...which one ...AGAIN soso565 General Motorcycle Discussion Forum 7 08-24-2011 10:37 PM
New rear Bridgestone tire for the GL1800 Kit Carson For Sale/Wanted Forum 4 12-28-2008 07:09 PM
GL1800 Rear Tire MrMegoo Goldwing Technical Forum 1 08-06-2008 09:11 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome