Making RC Crawler Tire Inserts with PLA or PETG Side Wall Flex Fix

Welcome back to Bill’s RC Workbench! Today, I’m testing a DIY sidewall stiffening mod for the M99S V1 tires. I’ve been thinking about reinforcing these sidewalls for a while, and I finally designed a 3D-printed plastic insert that sits between the foam and the tire. Will it work? Let’s find out together!

🔧 What’s Covered in This Video?

✔️ Installing 3D-printed sidewall supports
✔️ Testing compression & flex improvements
✔️ Comparing stock vs. modified tires
✔️ New cheap Amazon batteries – any good?
✔️ Running tests on the track

The results? Surprisingly promising! We saw improved sidewall stiffness while still maintaining some flexibility. Plus, the rig handled better on inclines!

🏁 Want to Try This Mod?

I’ll be posting the 3D print files—check the description for the download link!

📢 Let’s Talk RC!

Have you tried stiffening RC tires before? Got a better method? Drop a comment below!

#M99S #RCCrawler #RCModding #3DPrinting #RCTires #RockCrawling #OffRoadRC #FusionMini16


Help from Friends:
Orlandoo Hunter http://www.oh-model.com
Bondic https://notaglue.com/
Proxxon https://proxxon.com

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