Beta Alp 4.0 Tire Size
The Beta Alp 4.0 (349cc) takes a 90/90-21 front tire and a 130/90-18 rear tire.
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Key takeaways
- Front tire: 90/90-21.
- Rear tire: 130/90-18.
- Any tire made in the same size fits - shop across brands on price and grip.
- Covers 2004-2012 (size changed across years - see table).
Verified fitLast checked
Sources: bikez.com motorcycle specifications
Reviewed by the CrankDex editorial team against manufacturer and retailer fitment data.
Buy tires for your Beta Alp 4.0
These are the OEM sizes. Any tire made in the same size fits the rim - so you can shop across brands (Michelin, Dunlop, Pirelli, Shinko, and more) on price, grip, and mileage. Replace front and rear as a matched set where you can.
Front tire: 90/90-21Shop every brand in this sizeShop Rear tire: 130/90-18Shop every brand in this sizeShop
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Beta Alp 4.0 tire sizes by year
| Years | Front | Rear |
|---|---|---|
| 2012 | 90/90-21 | 130/90-18 |
| 2010 | 90/90-21 | 90/90-21 |
| 2008 | 90/90-21 | 90/90-21 |
| 2007 | 1.85-21 | 3.00-18 |
| 2004 | 90/90-21 | 140/80-18 |
Frequently asked
What size tires does a Beta Alp 4.0 take?
The Beta Alp 4.0 takes a 90/90-21 front tire and a 130/90-18 rear tire. See the by-year table for other years.
Can I fit a different brand of tire on a Beta Alp 4.0?
Yes - any tire made in the same size fits the rim, so you can choose across brands (Michelin, Dunlop, Pirelli, Shinko, and others) on price, grip, and mileage. Keep front and rear a matched pair where you can.