> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://schwalbetires.crisp.help/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Balloon bikes and extra-wide comfort tires

A "balloon bike" is our term for an everyday or touring bike fitted with unusually large-volume tires — typically 50-60 mm wide. The idea is simple: a bigger air cushion acts as natural suspension, so you get a noticeably smoother ride without adding complex (and heavier, pricier, more maintenance-hungry) suspension hardware.

**How it compares to real suspension:** in testing, a wide tire like the Big Apple (60mm wide, run around 30psi) reduced vibration reaching the lower back by roughly 25% compared to a standard-width tire (around 35mm wide) on the same bike. A full-suspension setup does a bit better — around 33% — but at a real cost in weight, price, complexity, and maintenance. For a lot of everyday and touring riding, a balloon-bike setup gets you most of the comfort benefit for a fraction of the tradeoff.

You can still add a suspension fork or seatpost to a balloon-bike setup if you want to — the wide tires and mechanical suspension aren't mutually exclusive, they just address the same problem from different angles.

**Rolling resistance isn't the penalty you'd expect.** Wide tires have a reputation for rolling slower, but at a given pressure a wide tire actually deforms less than a narrow one to create the same size contact patch, so it holds its round shape better while rolling. 
| A wide balloon-bike tire at the right (comparatively low) pressure can roll just as easily as a narrower tire pumped much harder  
[see our article on rolling resistance for the full explanation of why wide tires roll well.](https://schwalbetires.crisp.help/en-us/article/rolling-resistance-explained-what-it-is-and-what-affects-it-cjppql/)

**Setting the pressure:** Balloon-bike tires can be run anywhere in a fairly wide range depending on your comfort preference, but a good practical target is around 2.0-2.5 bar (roughly 29-36 PSI) — noticeably softer than you'd run a standard 35mm touring tire (which typically wants closer to 4 bar / 60psi to roll comparably well). Use a pressure gauge to dial in what feels best for your weight and the surfaces you ride.

**Fitting dimensions.** The frame or the fork must offer enough clearance for the tire. Consult our ["Tire Sizing & Fit"](https://schwalbetires.crisp.help/en-us/category/tire-sizing-fit-mb3xva/) category for more information.