Having followed with great interest the various threads on adding weights inside the tires to balance em (and the threads covering golf balls, equal, centramic balancers etc), I thought I'd give it a go.
I did this mainly because of the often mentioned issue regarding the lug-centric balancing requirements, problem being that in Ireland its almost impossible to find a shop with the right equipment.

Anyway, before I started I had a bit of vibration around 50mph, but other wise OK, I then added approx 4.5 ounces of fishing weights (round lead balls of about 1/8" & 1/4" diameter).

Since then, on some journeys its smooth as glass at all speeds, but other times I get a steering wobble anywhere between 35mph and 55mph. The wobble ranges from slight to severe, over a speed range anywhere from 5 to 10mph.
As the weights obviously drop when slowing down (can hear them fall at around 5mph) each segment of a journey is different, some perfectly smooth, some not so.

BTW tires are newly fitted BFG A/T 285/75/16 on OE rims.

I reckon I may have to adjust the quantity of weights in the tyre, but I can't figure out, am I likely to need more? or less?

 

Anybody?