140/80 17 for GS1000E?

[crayonjota]

I have a very worn Himax by Chengshin, which at 2500kms is not a long time. I cannot seem to make a tyre last. Before that I had a Bridgestone Spitfire that was even more worn at 2000kms.

I have been offered a slightly lower profiled and wider (as above) to replace my 130/90 17. I run a very short chain and have the wheel as far forward as possible to keep the wheelbase short (no I dont have stability issues) and wondered if the larger tyre would bind on the swing arm. I know I will have to "adjust" the brake arm to fit, but modding the swing arm seems false economy... Thanks CJ

[Hap Call]

I've run 140/80 17 on the back of my 1100E. I found that the tire wore down even faster then the 130/90 17. The narrow rim caused the tire to "bend-out" on the outer circumference, giving a smaller contact patch thus more wear.

I understand your concerns with tires wearing out fast (I see the same thing) but I advise you to stay with the 130.

Hap

[crayonjota]

Cheers Hap!

I think you are probably right and your logic makes sense. I am just afraid of blowing $100 on a boot that may only last a couple of months... More Chengshin for me then... CJ

[oldschoolGS]

You need a 3.5in rear rim to make the 140 work. This combo fits on my 750, the only mod is to fabricate a thinner rear caliper torque arm. The GS1150 used a 3.5 in rear rim and the spoke pattern matched my stock 750 front. I have used the Metzeler ME-99 in 140/80 and Dunlop 591 in 140/70 rears with the Metzeler lasting longer. Good Luck, Ed.
1983 GS750ED

[Hap Call]

You need a 3.5in rear rim to make the 140 work. This combo fits on my 750, the only mod is to fabricate a thinner rear caliper torque arm. The GS1150 used a 3.5 in rear rim and the spoke pattern matched my stock 750 front. I have used the Metzeler ME-99 in 140/80 and Dunlop 591 in 140/70 rears with the Metzeler lasting longer. Good Luck, Ed.
1983 GS750ED

All the spacer are the same?

Hap

[oldschoolGS]

Yes, I bought the GS1150 rim a long time ago- it was a simple bolt on mod. I used the stock 750 spacers, rotor and caliper. The only mod was to fabricate a narrow single sided arm for the rear caliper. The tire clears well in the swingarm, either 140/80 or 140/70. The sprocket carriers are even the same.

I believe that the early 1150 rears were only 3.0in and were widened to 3.5in on later models. I think mine was off an 85 model, it is 17x3.5.

http://groups.msn.com/SuzukiGSGarage/gs750edbacktolife.msnw?action=ShowPhoto&PhotoID=3199

Good Luck, Ed.
1983 GS750ED

[KEITH KRAUSE]

I run a 130/90 on my '79 GS1000E. I wouldn't try to go any bigger. Not safe.