Could i get some more info on the Hankooks . When you say a low growl whats a low growl ? I have never owned any kind of tire other than street tires so i need to compare them to the stock tires on a fj if possible. How are they on the road , rain ,mud , rocks , snow ,sand , ice. How about on a scale from 1-5 for each. Are they directional ? And what company do you work for and do you sell wheels ? Thanks for any feed back i can get .
Not sure if it was me you were asking question to...
#1 Low growl? The tires are a radial mud tire, so they are going to be more noisier than the street tire (Bridgestone Dueler HT) that I have seen on most FJ's. They may sing going down the road, but not to the point that it sounds like the Mormon Tabernacle Choir is riding with you.

All mud tires are going to be noisier than street tires whether its Hankook, BFG, GYear MTR or the Cooper. All of which are excellent tires, just alot more $$$ than the Hankook.
#2 How are they on the road. We have sold alot of these tires since the fall and have no problems with them. They are a 8ply tire load range D tire, your oe tires are 4 plys so they will ride rougher (harder).
I have had no complaints about rain traction and as for rock and mud we have several guys that wheeled them at Gray Rock and thought they did great. I can't tell you anything about snow, the last real snow we had was in 2000.
They are not directional.
They are larger and heavier than your oe tire, I suspect this will effect your gas mileage some. I bet other FJ guys could advise you of their mileage.
#3 I own a tire dealership outside Jackson, MS
I like the look of the tire. It has a aggressive tread and sidewall. Our customers have always been attracted to the Cooper, Goodyear and BFG but many couldn't afford them or didn't want to part with that much cash. The Hankook gives them the look they want and the performance they want at a much more agreeable price.
The GYear and BFG MT will probably get more mileage.
#4 We carry many wheels.
PM me if I can help you further.
Thanks,
Chris