Tyre Tread Patterns

[Panrixx]

I'm still tryig to establish if the noise I get over 40-50mph is tyre/road noise or a bearing/ diff noise.

I have manual hubs on the front so I'm assuming it can't be the front diff, or the CV joints, as they should'nt be rotating. On the same basis I'm also assuming it can't be the Bronze Bushes that the front drive shafts go through. Is my logic flawed?

Turning to the tyres, I'm running 31" Runway Enduro A/Ts at 30psi, which I'll increase to around 33psi to see if that lowers the road noise.

I've noticed that on these, and other makes, the tread pattern points forward on one side of the motor and backwards on the other side. They are not marked as 'directional' tyres and can only go on the rims one way around, to show the white lettering on the side walls.

Any tyres experts amongst us?
I wondered if anyone knew why tyres with tread patterns that are not totally symmetrical are not 'directional', so that they point in opposite directions depending on what side of the motor they are? Could this lead to additional road noise.

[The Lovely Boyo]

I'm running Maxxis 751's.

Slightly noisier than my previous tyres but at all speeds. It has reduced now they have been on for a month or so.

[stormforce]

Hi Brian.My colwayAT's make a bit of noise when on tarmac but i only notice it when the window is down

[it's Jim]

I use General A/T2 on mine, anything over 40 mph you hear some road noise. Not as bad as the L/Rover 110 i have using this week with full mud terrain tyres on it. At any speed sounds like your eating the road not driving on it. I would have thought that the tyre pattern should be facing the same direction on all four wheels.
Jim