New Rosava 12.00R18 UTP21 tyres for Gaz 66 and Zil 157

New Rosava 12.00R18 (320R457) UTP-21 Tyres for Gaz 66 and Zil 157

Fresh 2025 production, made to order at the Rosava plant in Ukraine. Same size as the original tyres, but rated for over 50% more load.

If you own a Gaz 66 or a Zil 157, you already know the problem. Good 12.00-18 tyres have been hard to find for years, and since 2022 it has only got worse. Most of what is still on offer is old stock – tyres that were “new” ten years ago and are now hard, cracked and one inspection away from a fail.

These are built for your order, so they reach you a few weeks after leaving the mould. And since both trucks run on the same 12.00-18 size, one tyre covers both.

Key facts

• Size: 12.00R18, also marked 320R457
• Load and speed index: 140K – 2,500 kg per tyre at up to 110 km/h
• Construction: radial, tube-type (TT)
• Tread pattern: UTP-21, directional herringbone off-road pattern for soft and loose ground
• Dimensions: 1,084 mm outer diameter, 337 mm section width
• Weight: 58 kg
• Measuring rim: 465-228 (228G-457)
• Index pressure: 520 kPa (75 psi)
• Road approval: E46 mark, UN ECE Regulation 54, approval no. E46*54R00/26*0077*00 (June 2025)
• Sidewall markings: ROSAVA and SUPERTECHPROM, POR/MPT
• Operating temperature: -60°C to +55°C
• Production: 2025, made to order
• Fits: Gaz 66, Zil 157 and other vehicles using the 12.00-18 size
• Warranty: 24 months for private buyers, 12 months for business buyers (factory warranty)

More load capacity than the original

Classic Soviet bias-ply 12.00-18 tyres like the K-70 were rated at 1,600 kg per tyre at 80 km/h. The UTP-21 carries 2,500 kg at 110 km/h – over 50% more load, at a higher speed rating.

On a loaded Gaz 66 or Zil 157, that means a real safety margin instead of running close to the limit. Add radial construction and you get better road manners, less heat build-up on long motorway runs and more even wear than the old bias-ply tyres.

The outer diameter and width match the original tyres to the millimetre. Your speedometer, wheel arches and clearances stay exactly as the factory intended.

The tread is directional, so mount each tyre following the rotation arrow on the sidewall.

Why fresh production matters

Rubber ages even when a tyre never touches the road. After years in storage it loses elasticity, hardens and starts cracking at the sidewalls – exactly what an inspector looks for at the TÜV. On a heavy truck with drum brakes and no ABS, how much grip you have on wet tarmac is not something you want to guess.

These tyres are E-marked under UN ECE Regulation 54, the road-approval standard for truck tyres in Europe. We can send you a copy of the approval document on request, in case your inspector wants to see it.

The Gaz 66 and Zil 157 were built to keep going where the road ends. On old, hardened rubber, they don’t.

Rosava and SuperTechProm – same tyre

Rosava has been making tyres in Bila Tserkva since 1972 and still produces the Soviet-standard sizes these trucks were designed around. The sidewall carries both the ROSAVA and SUPERTECHPROM names. SuperTechProm is the brand of Ukrtechprom, which has produced truck and agricultural tyres together with Rosava since 2009. Same factory, same tyre.

We also supply Rosava tyres for the Kraz 255B, Ural 375D, Ural 4320 and Zil 131.

How ordering works

These tyres are not sitting in our warehouse. They are produced for each order:

1. You order and pay through our online store (Visa/Mastercard).
2. We place the order with Rosava within 24 hours and confirm it to you.
3. Production takes 3–4 weeks. Your tyres are made during this time.
4. We ship them to you as soon as they reach our base in Poland.

Total: about 4–5 weeks from order to delivery.

Yes, that is longer than buying off the shelf. The difference is that your tyres will be weeks old when you mount them, not years.

Paying safely

You pay by card through our store’s secure checkout, so you keep the standard Visa/Mastercard buyer protection. If the tyres don’t arrive as agreed, you can raise a dispute (chargeback) with your card issuer. We chose card payments over bank transfer on purpose – for a made-to-order product shipped from another country, you shouldn’t have to rely on anyone’s word.

Inner tubes

The UTP-21 is a tube-type tyre, so each one needs a 12.00-18 inner tube. Add our 12.00-18 inner tubes to the same order and everything ships together, so you can mount complete wheels in one go. It’s also worth keeping a spare tube in the truck.

Delivery and collection

• Shipping: from Jarocin, Poland, to Germany and most EU countries. Shipping cost is calculated at checkout.
• Express: available at extra cost – we can dispatch within 48 hours of the tyres arriving from the factory.
• Personal collection: welcome. Jarocin is about 230 km from Frankfurt (Oder), via the A2 and S11. We’ll let you know as soon as your tyres arrive.

Questions?

Not sure these fit your truck, or want a copy of the road approval? Get in touch through our contact form – we work on these trucks every day and we’re happy to help.

For the bigger picture on sourcing tyres for Soviet military trucks, read our brutally honest guide to buying tyres in 2025.