"Get an alignment any time you do suspension work"

How about Roadmaster active suspension in the back and sumos in the front? Would that require an alignment?

 

Alignment is cheap compared to buying new tires etc.

 

Anyone? I ask because I'm thinking of installing these on my new sr5. I've read on here that the ras lifts the rear an inch and that the Sumos lift the front an inch. Thoughts?

 

I thought sumo springs were a bump stop replacement. If so, I would not expect them to provide a lift nor affect alignment.

 

They are a bump stop replacement. I thought I read that they lifted the front a half inch of so? Would an inch in back and a half inch in front make enough difference to require an alignment?

 

Something is wrong if a bump stop is giving you a lift. The purpose of a bump stop is to prevent metal on metal contact in emergency situations where you’ve hit the ground so hard that your shocks and springs can’t prevent the over compression of your suspension.

 

The thing with sumos and superbumps, is that they are so big and squishy, that they contact the lcas in the front and basically touch the leafs in the rear on a bone stock truck. So, they "can" provide lift, but fully compressed they will have the same bottom out height as stock bumps.

 

Sounds like a very bad design if true. Why would you want a piece of polymer being a active part of your suspension on a regular basis?

 

Because they are so soft, that in the front you dont even realise them due to the motion ratio on them. The rear, they are slightly noticeable. But, they are progressive, so that is how they have to be.

 

That sounds like pseudo science. If polymer was viable as an active part of a suspension, you would see it in stock and/or race trucks.

In any case, getting back to the question, if they change the ride height you might want to consider an alignment, but I’m not sure how much 0.5” throws it off.

My own alignment has been out of whack from the dealer, after a 1” lift, and after a summer of frequent off road use.

 

I've been suspicious of those stops for these same reasons. I also don't feel like the material will last exposure to the roads for long.

 

2016 Tacoma with 4” front lift, 3.5” rear

I’m adding half inch spacers to the rear suspension because the new lifted springs I installed are lower by 1/2” than the previous springs with blocks.

I wasn’t going to get an alignment because it’s the rear and it is so minimal it should have minimal affect on the front and when I have my canopy now and again it’s going to correct itself.

any thoughts?

 

Similar question...what about when only replacing the leaf packs...alignment required?

 

No. There is no adjustment in the rear.

 

I'd at least check it with a tape measure to see that you don't have a new axle centerline relative to the old setup and that its still square to the front.