150 rear tyre

[Romeo.D]

Most important is to get a tire that fits the rim.
I often see to wide tires mounted.

Exactly i have same tire on PVM 3 spoke vheel wich is 3,5" and Bridgestone declares this tire for 3,5" but tire is to big for this rim, to round. I mesured tires on both bikes on Laverda it is 150 on Bakker with this PVM rim it is 135mm.
Then i mesured rims on both is printed 3,5x18 but mesuring shovs that san remo spoke rim on Laverda is 4,15" and PVM as printed on it 3,5" .

 

[mcnicol]

I have a 5" wide 18 inch rear wheel off a CB1000 Honda (cast, not composite) that has a 170 rear tyre on it. I need to try it with an RGS swingarm and see if it'll even fit, no way it'll go into a Jota swing arm.
But since the bike's my commuter, I don't dismantle it for fun. And since it's a Honda, it never needs any repair work. Bloody boring thing to ride after a Jota. But if I ever have to take the wheel off, I'll give it a try.

Ken

 

[Kiwi Laverda]

As said earlier I have a GSXR1100 4" rim in the RGS with a Michelin 160 Pilot Road.
Measures 155 and is a snug fit. I think you would have to modify the swing arm to go any wider.
Steve B did a wider swing arm for his RGA and fitted a 4.5" astralite with a 160 tyre.
http://www.breganzane.com/rebuilds/rga/rga_phase1.php

 

[Reggie3cl]

A 150 Avon Storm  on a 4" GSXR1100 rim  (actually about 155) is tight- not so much on an RGS swinging arm (won't go on the Jota arm), but on the chain, even with a 520 and offset sprocket.

 

[sfcpiet]

so what is the widest rim you can conveniently fit (into an RGS) and what is the most recommended upgrade 4", 4.5??

Henry,

4" with a 150/60 tyre is as close to perfect as you can get.  A 140/70 on 4" is also a very good combo, giving a huge footprint and extraordinary tyre life!

A 160 will fit, just, but won't be much/any wider once fitted and the contour will be less favourable than the 150.  After all, you pay for the whole tyre, why not use it all?  For the 160 slick I have lying around, I use a 3.50" rim as it will foul the tyre quite badly on the 4" rim.

Fitting wider rims is definitely possible, but won't give you much advantage as suitable tyres no longer fit into the stock swinger.

piet

 

[Laverda SF]

On the STK 2.75" Wide Borrani Rim, I will mount a 130/80x18; however, it does round somewhat but handles good. Generally, I recommend a 110/80x18 on the Front and a 120/80x18 on the Back. Perilli Radials are Fantastic, if you can find the Size, but tend to get Hard - You can't beat the Bridgestone BT 45's for Traction and Rain but tend to Wear.

Presently I mounted a "New" Perilli 110/80x18 Radial on the Front and a "New" Bridgestone 130/80x18 Bias on the Rear - Will let you know what my conclusion about this Combo is on my 8000rpm 71/72 SF are by the end of this Summer.

Polished my Pipes. Charging the AGM Battery and waiting for this Low Pressure Weather System to pass before hitting the Road - Looking forward to a Great Riding Season.

PS: I do a lot of High Speed corning through long Sweeping Up Hill and Down Hill Elevations in the Cambrian Shield of Northern Ontario in all sorts of Weather, Day and Night, Rain or Shine with 300 mile Tourers a Shot.

RON