2" lowering blocks

[IXLR82FAST4U]

hey dudes, I lowered my 72 pick up truck and used 2.5" spindles, 2 inch drop springs in the front and 3" drop springs in the rear, it lowered quit a bit but I dont like the way it stands so I was thinking of using 2 inch lowering blocks in the rear to level it out, when I look htem up they have a foot note that says you cant use 15" wheels . does anyone know why and if it does hit then where?

[Trevor]

No parts hit anything on the truck but, it creates a safety issue and it's therefore illegal in pretty much every jurisdiction on the planet.

With 15" wheels, installing 2" lowering blocks puts the bottom side/surface of the trailing arms below the bottom of the rim.
1-1/2" blocks are maximum or you'll have to go bigger diameter wheels or of course 4" drop springs.

It's a safety issue should you ever have a tire blow, the trailing arm would contact the pavement and not the rim, and when that happens you skid uncontrollably like a skateboard on ice ...

[IXLR82FAST4U]

Originally Posted by Trevor

No parts hit anything on the truck but, it creates a safety issue and it's therefore illegal in pretty much every jurisdiction on the planet.

With 15" wheels, installing 2" lowering blocks puts the bottom side/surface of the trailing arms below the bottom of the rim.
1-1/2" blocks are maximum or you'll have to go bigger diameter wheels or of course 4" drop springs.

It's a safety issue should you ever have a tire blow, the trailing arm would contact the pavement and not the rim, and when that happens you skid uncontrollably like a skateboard on ice ...

good info thanks, ill be doing bigger wheels then.

[67 chevelle]

I dont like blocks , they can be problematic , sliding around and making "clunking" noises , springs are the way to go

[demian5]

Originally Posted by Trevor

No parts hit anything on the truck but, it creates a safety issue and it's therefore illegal in pretty much every jurisdiction on the planet.

With 15" wheels, installing 2" lowering blocks puts the bottom side/surface of the trailing arms below the bottom of the rim.
1-1/2" blocks are maximum or you'll have to go bigger diameter wheels or of course 4" drop springs.

It's a safety issue should you ever have a tire blow, the trailing arm would contact the pavement and not the rim, and when that happens you skid uncontrollably like a skateboard on ice ...

Yeah same thing if an airbag blows on a truck that can "lay frame". I've been witness to that.