Hot Steer Tires

If you can't touch them. There's a problem.

 

Temp check them with inferred thermometer.

 

Then check temp against other tires. If they still seem to high call the dealer.

 

110psi at least. What did the old ones look like? If the alignment is off it can cause the tires to heat up quite a bit.

 

Tires will get hot with friction. Just a nature of physics. The more friction, the more heat is generated. Have you ever set your hand on a tire thats set out in the sun all day? They get hot and they can take it. JMO

Check the temps with a gun if you want.

Always inflate tires cold. Check tire pressures hot is not accurate and pressures may exceed specs on the tire sidewall.

 

I run mostly desert, this time of year middle of the afternoon, 107 degrees air temp, road temp where your tires live is a lot hotter, so yes they very well maybe to hot to touch, the hub should not be nearly as hot, but where the rubber meets the road, you could cook an egg on them, can you touch a pan on the stove when you can cook on it. Probably not.

 

Never worry about tire pressure when hot. All tire pressure specifications are cold pressure, (eg. in the morning after having all night to cool).
105 psi may be a little low depending on the tire and load. See what the recommended tire pressure at what loaded weight is stamped on the sidewall.