Front Shock-Coil Over Replacement

Gen 3, TRD Off Road with 90K miles. Over the road driver, no off road or heavy hauling.
Question: Replacing the front shocks with Bilstein 4600's. Is there any need to replace the coil over spring? Not looking for a lift. How long do these springs last? Thanks

 

They should last the life of the truck.

 

I have another Tacoma- 2005 with 350K miles. I'm replacing the front shocks on that as well. How about that coil spring?

 

Assuming it’s not excessively rusted or cracked and there are no suspension modifications or added weight, you can measure your ride height and compare it to stock. If the spring rate or length of the spring has changed, the ride height will be lower than stock. Alternatively, you could remove the spring and measure it’s spring rate and length and compare it to a new spring.

 

Thanks. Might just pick up the package shock/spring. She deserves it.

 

If the springs aren't noticeably sagging and not rusted or damaged, you should be able to keep them.

 

Another reason to replace the whole coilover is that it’s an easier to install because you don’t need to disassemble and reassemble the coil over.

But otherwise I personally would never replace a spring that didn’t fail a proper inspection. I think people often replace perfectly good springs because they look old.