approx. USD 52 (EUR 47.90 RRP)
Marathon Plus Wheelchair
Tires - puncture-resistant pneumatic. Heavily puncture-protected pneumatic tyre with a low-marking compound and grippy sidewalls.
Primo
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Primo · Tires - puncture-resistant pneumatic · AC-105
Primo Extreme Kevlar 24 x 1 3/8 wheelchair tires
The Primo Extreme is a 37-540 everyday tire that uses Kevlar in its construction for added strength and wear life. At 90 psi it runs firmer than most 1 3/8 in tires, which typically sit near 65 psi, so it rolls more freely while keeping the wider footprint. The grey rubber is non-marking. The source retailer sells it in pairs and has listed it as on manufacturer backorder, so availability should be confirmed.
- Size (inch)
- 24 x 1 3/8
- Size (ETRTO)
- 37-540
- Pressure
- 90 psi
- Reinforcement
- Kevlar
Primo Extreme Kevlar 24 x 1 3/8 key features
- Kevlar reinforcement for durability
- Size 24 x 1 3/8 in (37-540)
- 90 psi rating, higher than typical for this width
- Grey non-marking rubber
- Supplied as a pair
Who the Primo Extreme Kevlar 24 x 1 3/8 suits
For users of standard-width 24 in wheels who want a tougher tire without changing to a narrow sport size. It is a drop-in replacement where a grey 37-540 tire is already fitted.
Figures for comparing
- Wheel size
- 24 in (ETRTO 37-540)
The same units on every product, converted from the specifications below. Where a source gives two limits, the lower one is shown.
Primo Extreme Kevlar 24 x 1 3/8 specifications
| Size (inch) | 24 x 1 3/8 |
|---|---|
| Size (ETRTO) | 37-540 |
| Pressure | 90 psi |
| Reinforcement | Kevlar |
| Colour | Grey, non-marking |
| Sold as | Pair |
| Maker country | Not confirmed |
| Brand | Primo |
| Category | Wheels, handrims and tires, Tires - puncture-resistant pneumatic |
| Catalog ID | AC-105 |
Compared with the source page on 5 October 2026. Details can change, so we confirm them in your quote. Open the source page.
Primo Extreme Kevlar 24 x 1 3/8: common questions
What does the Kevlar do?
The maker uses it to add strength and durability to the tire.
Is it in stock?
The source retailer has shown it on manufacturer backorder. We will confirm lead time in the quote.
Can I use my existing tubes?
Yes, it takes a standard 24 x 1 3/8 in wheelchair tube.
How to get a quote for the Primo Extreme Kevlar 24 x 1 3/8
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