The R 1300 GS breathes through a paper air filter tucked under the fuel tank, and a clogged one quietly robs power and economy. BMW’s service schedule calls for an inspection at every service and replacement when dirty — dusty riding shortens that interval fast.
This guide shows you how to reach the airbox, clean or replace the filter, and avoid the common pitfalls — in about an hour with basic tools.

BMW R 1300 GS quick service specs
| Item | Spec / Interval |
|---|---|
| Engine oil | SAE 5W-40 (API SL, JASO MA2; BMW Motorrad ADVANTEC Ultimate) |
| Oil capacity | 5.0 liters |
| Oil change interval | 6000 miles |
| Chain slack | See owner’s manual |
| Spark plug | NGK LMAR8AI-10 |
| Tire pressure (F/R) | 36 PSI front / 42 PSI rear |
| Battery | 12V 10Ah lithium-ion |
How to clean and replace the air filter
- Remove the seat and side panels, then lift the fuel tank enough to reach the airbox.
- Release the airbox clips and lift the lid clear.
- Lift out the filter element and inspect it against a light — if you can’t see light through it, replace it.
- Tap out loose dust, or blow it out gently from the clean side with low-pressure air.
- Wipe the airbox clean and check the drain for debris.
- Fit the new or cleaned filter the same way round, refit the lid, and torque the clips evenly.
- Lower the tank, refit the panels and seat, then start the engine and check the idle.
Common mistakes to avoid
- Using high-pressure air, which can tear the filter paper.
- Leaving the airbox lid unseated, which lets unfiltered air into the engine.
- Forgetting to check the airbox drain after riding in rain.
FAQ
How often should I replace the R 1300 GS air filter?
Inspect it every 6000 miles and replace it every 12000 miles — or sooner in dusty conditions.
Can I clean a paper air filter?
You can tap or blow out loose dust, but a paper element can’t be washed. Replace it when it’s dark or damaged.
Will a dirty air filter hurt fuel economy?
Yes — a restricted filter makes the engine work harder and can raise fuel consumption noticeably.

