3 replies [Last post]
schrader7032
schrader7032's picture
 Offline
VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6666

I have a new Metzler Block C front tire, 3.50x18 for my R69S. I recently bought an IRC GS-11 which, by all accounts and a variety of tests, suggests that it is causing a wobble at speeds above 50mph. I've checked the steering stem bearings...not the issue. I decided to get a better quality tire, hence the Metzler.

I had the local dealer mount the tire...I don't have the capability. I've used my home balancer and found that the heavy spot was the valve stem...pretty obvious as the tire settled on my stand. I ended up putting 1.5 oz opposite the valve stem to balance it. I believe that is too much weight, so the next step is probably to rotate the rubber on the rim. Again, I'm not set up to do that right now.

My question has to do with any paint dots on Block C tires and what to do with them. Does anyone know what to look for on Block C's? The IRC tire has a big yellow dot on the sidewall. The Metzler doesn't have anything like that. It does have two smaller red dots way up on the sidewall, near where the tread meets the sidewall. Is that the paint dot I'm looking for? Is that a light or heavy spot?

__________________

Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

The Plunger
The Plunger's picture
 Offline
VBMWMO #8356
Joined: 09/03/2012
Posts: 227
I believe the red dot is the

I believe the red dot is the LIGHT side, meant to line up at the stem. Just looked at my Metz's and confirmed.

__________________

Brian
'52 R67/2
'63 R69 S
In what space, sir. In what space!?

schrader7032
schrader7032's picture
 Offline
VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6666
Interesting. Given that the

Interesting. I found a tech book on Metzler's site and it does indicate that. Given that the dots on my tire are opposite of the stem, the imbalance is being magnified. Thanks...

__________________

Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

312Icarus
312Icarus's picture
 Offline
Joined: 07/15/2016
Posts: 349
Use chalk as balancing mark

Use Chalk to mark the tires when you are balancing...

Icarus

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.