Honda CG 2004- whats the largest rear tyre size ?

[i2ico]

Hi everyone,

Ive been looking into purchasing a larger rear tyre for my Honda CG 2004, and looking for advice from any other people who have had experience with this or the knowledge.

Manufactor states tyre size: 90/90 x 18

Ive looked on this forum and found the rear rim is: - 1.85 x 18

Im not looking to go crazy, just abit more meat on the tyre, both for cosmetic and a bit more grip.

How big can I go?

Thanks in advance!
2ico
____________________
Limitations are only what you make of them.
Current: ER5, Stolen/Recovered:Honda CG

[neil.]

Stick with the standard sizes, but go for Michelin Pilot Sporty tyres. Larger tyres will probably reduce your speed and affect handling in a bad way on a CG.
____________________
CBT February 2008 | A2 June 2008 | Yamaha YBR125 (written off) | Honda CBF125 (current)

[blurredman]

I had a 4" on the rear of my cg. But it only just fit, and when I say that, I meant it did rub the subframe as was literally 2mm from the brake torque arm. So I'd suggest 3.5".

Saying that though, the better tyres for that size rim seem to be in the 3" range.
____________________
CBT: 12/06/10, Theory: 22/09/10, Module 1: 09/11/10, Module 2: 19/01/11
Past: 1991 Honda CG125BR-J, 1992 (1980) Honda XL125S, 1996 Kawasaki GPZ500S, 1979 MZ TS150.
Current: 1973 MZ ES250/2 - 18k, 1979 Suzuki TS185ER - 10k, 1981 Honda CX500B - 91k, 1987 MZ ETZ250 (295cc) - 40k, 1989 MZ ETZ251 - 51k.

[DMCpro]

I've got a 110/90-18 on the back I had to make spacers for the rear brake torque arm Though it feels much more stable now
____________________
Honda CB-1, TS125X
VW Golf Estate

[ricklincs45]

Stick with the standard size - it's that size for a reason.

Buy the best quality rubber you can afford and run at recommended pressure; you'll achieve nothing other than messing up the handling by fitting a bigger tyre.
____________________
Author '80 Bikes, and counting...' Currently getting frustrated with an MZ 125 TS.

[DMCpro]

[ricklincs45]

Personal opinion - I'm fairly sure Honda knew what they were doing when they spec'd tyre size.
____________________
Author '80 Bikes, and counting...' Currently getting frustrated with an MZ 125 TS.

[i2ico]

Great, thanks, info taken!

Ill go for the 90/90 -18 M/C 57P reinf. Pirelli City Demon
As the front is same model.

Am i right that 90/90 is 3.00 in metric? or close too.


Yeah my rear wheel had a new tyre put on by dealership,"vee rubber" some thai cheap tyres (VRM015-2.75), feels skittish in wet, and doesnt give me confidence in the corners.
____________________
Limitations are only what you make of them.
Current: ER5, Stolen/Recovered:Honda CG

[DMCpro]

3.00-18 continental conti is a good tyre aswell had these before

And it's roughly the same
____________________
Honda CB-1, TS125X
VW Golf Estate

[Walloper]

Std fit. Michelin Sporty are all you need. Tunz of grip and live for years.
You can't get enuf power down to the tyres to damage them much.

I put them on our CG and it goes like fuck now.
____________________
W-ireless A-rtificial L-ifeform L-imited to O-bservation P-eacekeeping and E-fficient R-epair

[neil.]

Pilot Sportys are MUCH better than City Demons! Amazing tyres.
____________________
CBT February 2008 | A2 June 2008 | Yamaha YBR125 (written off) | Honda CBF125 (current)

[Pigeon]

I recently fitted 90/90-18 Metzeler ME22, loads of grip from day 1. The only question mark might be how soft the rubber appears to be. They quote a life of only around 4,000miles and MAY be more prone to puncture, but this is just guesswork compared to the concrete that they replaced.

But so much grip and £32 from moto-tyres.co.uk

Pilot Sporty get good reviews everywhere also.

[i2ico]

Thanks again guys lol

Your absolutely right haha, got to be the Pilot Sportys!

Even the "Honda CG125 Owners Club" recommended these tyres.

Plus only £4 difference in price compared to Pirelli demons.
____________________
Limitations are only what you make of them.
Current: ER5, Stolen/Recovered:Honda CG

[P.]

[i2ico]

While I got some good technical minded people here, before I start a new post lol.

My rear chain seems to be jerking?

Please see video:
https://youtu.be/Nr4eml8yo_E

Is this normal..

Could it be a stiff link?
Rear wheel alignment?
Sprockets?
____________________
Limitations are only what you make of them.
Current: ER5, Stolen/Recovered:Honda CG

[Alpha-9]

Slack chain, bent subframe

Stretched probably.
I'd change chain and sprockets if they're fucked

Tighten the slack to spec first if you haven't...doesn't look like it
____________________
Fzr-600 1999

[ricklincs45]

Agree with Alpha, looks like chain is banjaxed. Make sure you change chain and sprockets together - no point putting a new chain on worn sprockets; old sprockets will knacker a new chain.

If your bike is more than four years old, I'd change the rear wheel cush drive rubbers while it's all apart; those rubbers help take some of the shock out of the transmission and help make chain and sprockets last a bit longer.

Good idea to have a look at rear brake shoe wear/condition too while it's all apart - and to lube the pivot pin that goes through the rear brake plate - they have a tendency to seize-up over time.
____________________
Author '80 Bikes, and counting...' Currently getting frustrated with an MZ 125 TS.

[kramdra]

No the video looks perfect, thats what single cylinder bikes do. Mine does it far worse, and that was with a correctly set, lubed, brand new chain and sprockets.

Without some revs to make it smoother, the chain jerk would stall bike at idle and looks a lot more violent than yours.



Tire size... just get a good brand. my 125 has 110 front and 140 rear, and cheap tires are just as bad.

[i2ico]

[MarJay]

[i2ico]

Update, Just checked the Vee rubber the dealership put on, speed rating "J"

62 MPH!!!

I've been doing 70+ MPH

Any give on these ratings or is it strictly abide by these rules lol


Going to wait till summer, if it ever comes to change tyres
____________________
Limitations are only what you make of them.
Current: ER5, Stolen/Recovered:Honda CG

[Alpha-9]

lol max speed for rubbers?
First i've heard of that, weird


As for the jerky chain, it will be more jerky with no load also, it's when you ride it counts
____________________
Fzr-600 1999

[MarJay]

[xz130]

Stick with the standard size tyres but get Michelin pilot sportys, that what I'm running on my 07” cg and it has so much more grip than the rubbish Pirelli city demons

[i2ico]

Thanks,
What size Michelin sportys your running 90/90?

I also found that, for example my pirelli city demon, the fr tyre is 2.75 from the inner wall and expands to 3.00 to the outer wall.

So there is no true tyre measurement.!?!?!?

So xz130 do you know the true size of your sportys outer tyre?