Front forks /wobbly steering

[ricardo]

Bikers thanks.
No the steering doesn't vibrate or shudder. It feels as if the steering is imprecise. I seem to have to always be turning the bars  to keep the bike on a straight line. Probably more noticeable while on a bend
On another bike I once had with excellent steering it behaved like this  when my front tyre was below pressure
Does that mean anything different.?

Ricardo.

[Bryanj]

How old and what type is the tyre? Has this happened suddenly or always been there? Have you altered or adjusted anything recently?

[ricardo]

hi. thanks for reply. Apologies for late response.

It was there when I drove the bike away. I thought tyre might have been a bit flat. it was a little. Toppoed air up and it helped somewhat. I have been doing other stuff since but all suggested investigations have not resulted in a solution. Tyre and wheel off so I;ll look at tyre and let you know.
Ricardo

[ricardo]

tyre is 'hent (or Heng) sinh

Lettering a bit weird.
Tyre in good condition but the 2 parallel lines near the edge of the tyre seems a bit off centre. A clear gap between the inner one and the rim but not visible gap on the opposite side of the tyre.
Ive made no adjustments
Ricardo

[hairygit]

Well you may have found your problem, the tyre is not mounted correctly! Deflate the tyre completely, and push the beading in the rim a bit. Smear tyre soap or similar around the inside of the rim walls/along the tyre bead, and re inflate until the tyre bead sits evenly around the rim, then adjust to the correct pressure and go for a test ride. If no improvement,get the tyre changed, it's probably knackered.

Sent from my X6pro using Tapatalk

[Bryanj]

Also very cheap tyre. Did not have a good rep

[Nurse Julie]

Also very cheap tyre. Did not have a good rep

Nowt wrong with cheng shins, I have one fitted to the front of my CB400/4 , best tyre i have ever had for stickability to the road. I have a Mitas or however you spell it on the back, and once again, absolutely fantastic. The only problem now is that my 400/4 handles so well with this combination, it makes me want to ride fast all the time 😁😁😁😁

[Bryanj]

Must have changed Julie, when i was fitting them, admittedly many eons ago, they were marginaly worse than the original Japanese rubber!!

[ricardo]

Thanks to both of you. I have a spare used tyre which came with bike. Seems to have very little wear on it. As I'd be taking tyre off anyway should I replace it with this one?

Ricardo

[hairygit]

If you have another tyre, then yes, change it. While it's off check the inner edge of the rim for rust or the likes. If there is any, clean it off, as it needs to be a smooth surface for the tyre to seat itself properly.

Sent from my X6pro using Tapatalk

[Moorey]

Also very cheap tyre. Did not have a good rep

Nowt wrong with cheng shins, I have one fitted to the front of my CB400/4 , best tyre i have ever had for stickability to the road. I have a Mitas or however you spell it on the back, and once again, absolutely fantastic. The only problem now is that my 400/4 handles so well with this combination, it makes me want to ride fast all the time 😁😁😁😁

Well Julie I have been away in Devon and Cornwall for the last 5 weeks and have had the 400 superfour with us and done quite a few miles on it. On Monday I went out on the 350 and couldn't believe how bad it feels. I have been kidding myself about the Cheng Shings. Now awaiting new tyres been delivered.  4.00x18 and 3.50x18 if you have use for them you are more than welcome to them, seems such a shame to scrap new tyres. T don't blame the fact they are Cheng Shings I am just going to put the correct size tyres on the bike.

[Nurse Julie]

Yep, agree totally. The correct size tyres always help 😀😀😁

[ricardo]

Thanks Julie.
Ill check in the manual and be sure that the right tyre is going on

Any views on using paint stripers to remove the black paint sprayed in the hub and rim. It seems the cheapest option?!

[ricardo]

Now I'm confused. As usual.

Tyre spec according to Haynes is  front 3.00 S18 (4PR).

The spare tyre is 90/90-18 M/C 57P

I suppose the M/C is motor cycle but the rest is Chinese to me.

The existing Feng shui tyre is 3.00 -18. 47p

Advice please or I will have to walk everywhere
Ricardo

[ricardo]

Many thanks for all the advice. I now have a plan
Ricardo