Is there a way to shrink vinyl truck tires?

[Plumcrazy Preston]

I would like my AMT Goodyear tires to fit the flanged rims of my Kenworth W-925 tractor a bit more sung so "the bead is set". Any tips? 

[afx]

No idea how to shrink a tire.  Might consider making the rim bigger.  I've used a layer or two of tape wrapped around the rim.  You can also glue on strips (bands) of plastic around the rim. 

[Force]

You can fill them with something like tissue or some kind of foam so they will stretch out easier and the tire bead goes all the way out to the flange of the rims.

This picture is borrowed of our fellow member Bills72sj from another post on this forum and it's a great tip.

His own text for this picture.
Quote:  Buy some 3/8" foam window "packing rod" from Home Depot for like $3. Cut to length and stuff it in the tire. It really helps scrawny AMT tires push the tire bead out to the rim lip. One bag/roll will probably do 4-5 semi trucks.  Unquote

Edited December 17, 2020 by Force

[Plumcrazy Preston]

Force, thanks

 

I just ordered this:

 

https://www.homedepot.com/p/Frost-King-3-8-in-x-20-ft-Grey-Poly-Foam-Caulk-Saver-C21H/100067266

 

How long should each piece of foam rod be, the outer circumference of the tire?  I will need this for my AMT Wilson cattle trailer as well.