gs1000/gsx1100 wire wheel wider rims

[tubehead]

I own a 81 gsx1100 wire wheel model and a 79 gs1000N wire wheel model.
I have bought a set of bare second hand hubs and want to lace 18in wider rims.2.50 front and 4.50 rear so I can run modern tires and upgrade the brakes on both.I want to swap the new wheels from one bike to the other depending on my current whim and I was wondering if the GS1000 can squeeze a 160 rear tire in on the stock swing arm???.I have read somewhere the GSX will be no problem apart from the rear brake torque arm but would like some advise on the gs1000.
I don't want to change the forks on either just some decent shocks on the back end and rebuild the stock forks so everything can be put back to original.

[salty_monk]

I think you might struggle for clearance with a 160 in a stock swinger.

You can fit one in an Aluminium 1100 Swinger which will fit on your bike... (You might have to jack the rear footpeg frames out 1/2" for clearance is all).

Either way you'll need a modified brake stay & likely an offset front sprocket / custom wheel spacer set. I don't think there is room for the chain to squeeze past a 160 as stock.

[John Kat]

SM is right, here's a picture of a red GSX R 1100 4*18" wheel in a Katana 1100 swingarm.
On my other Kat I've used a 4.5*17 wheel with a 160 tire without any problem.
There is no clearance problem if you modify the brake stay AND you offset the chain
The red wheel is fitted left to right to check the spacers.