A wider rear tire for my Seca?

It seems that I might have a pretty good deal on a new Spitfire S11 to put on the rear wheel of my Seca 900. But it is a 130-90-18 instead of a 120-90-18, as recommended in the manual.
Has any of you ever installed a wider tire like that on a bike like mine or on an '84-85 Seca 750? Any issue?

Thanks

 

This is a common change!

 

And what is the general feeling or riding experience compared to stock width?

 

I dont think there will be much difference in ride between a 120 and a 130.

on my old 82 xs 400 I went from a 90 to a 130 rear tire and It felt alot more stable in the cornering just because I had a good chunk more contact with the road.

so 120 to 130 might not be that big of an improvement but it is an improvment

that being said, does anyone know what the widest tire that will fit on a 83 750R shaft drive?

 

Update:

I asked the dealer who advertised the Spitfire at 82$ how old was his new tire?
He answered me: how should I know?
I told him to check on the side of the tire for the small four digits engraved in the tire wall.
HE said: I'll go check and call you back later.

When he called back, he said: The digits are 2107 (21th week of year 2007)

I said: well thank you, I don't want it!

Bit i will look for a wider tire anyhow.

 

"How should I know?"

And he's the DEALER!?!?!?!?!?!

You actually waited for him to call you back!?!?!?!?!?!?!?!?

I'm not sure which is worse!!!!!!

Oh, wait...............you did say, "well thank you, I don't want it!"......so I guess you're ok then.

LOL

Dave F

 

Well, he sounded like a very young guy so I could understand that he would ignore that and the place wasn't actually a tire dealer, it was more like a MC repair shop that sells tires.
And I was just curious: first -will he find the digits? second -will he call me back? third-how old is the tire? fourth-will he feel bad then to offer that 2nd World War tire for sale? 5-will he be surprised I wouldn't want it at any price?

 

If you can wait a bit for a tire you could look for a deal here:
Montreal Salon de la Moto 2013 (just Google it) Feb 22-24
Although I think you may know about it anyway.
Cheers, Max.

 

wow. sounds like a tire i saw on the shelf at a yammie dealer. yellowed sticker, old dunlop. mfg before 2000. advertised as "NOS". like, seriously have that for sale? NOS is great....but not for TIRES!

jeez. you think that would be illegal to sell a tire older than 6 years old.

 

When i got my bike from the PO there was a 140 sized Dunlop on the rear wheel and there was a distinct wear pattern on the tire from it rubbing against the swing arm. I would not suggest going any larger than 130. The wear pattern was very pronounced and I can't believe he rode it like that.
Just my two cents.

Massimo

 

Thank you, that's what I wanted to know.

 

Well, I almost forgot, good thing that you remind me!

 

I have always wondered it the Swing Arm could be modified to accommodate a wider rear tire.

Cut the inside of the Shaft Tunnel vertically, leaving clearance for the shaft.
Cutting the "Horseshoe" back, ... squared-off, deeper and wider.
Replacing the Aluminum removed with thicker, flat, Billet Aluminum stock and have the replacement sections TIG Welded by a Pro who can lay a strong bead joining the Billet to the Stock Swing Arm.

The new Tire might have to be installed deflated until the Tire is squeezed through the narrow section, ... close to the Axle and Final Drive.

There might be enough room at the Back-end to retain the Stock Fender.
If not, ... a Customized Fender might need to be fabricated.
That would be the least of the problem if it worked.

 

Unless you're fitting a rim to suit the wider size tyre in most cases there's really no point, putting oversize tyres on, it doesn't automatically give any advantage and quite often can be detrimental

 

My 900 had a 130 Spitfire on it when I picked up a nail.

I purchased a "correct" sized 120 Michelin Pilot Activ. It is a great tire, that seems to be wearing well and certainly feels better than the old Spitfire.

The 130 fit, just, and did require a bit of tugging to get it by the swingarm.

I'm ordering a new set of Pilot Activ's for my old Gl1000.

Dave

83 900
77 Gl1000

 

Rick............... I know that has already been done--I've read write-ups on it, I just can't remember where. It was a while back, but within the past couple years or so.

Wider tire + nails------- See!?!?!?! Wider isn't always better. The thinner the tire - the less chance of picking up a nail. Hmmm...maybe that's why in 30 years I NEVER got a nail in my Cannondale sr400 racing tires......LOL

Dave F