Quarq Tyrewiz Air Pressure Sensors For Presta Valve: Black

Product Information

If you’ve setup ranges, then it shows that information as well by highlighting when something is out of range: While the TyreWiz app suggests tyre pressures based on your weight and tyre dimensions, I didn’t find this particularly useful for mountain biking. It suggests just 14/15psi for an 85kg rider running 29×2.5in tyres — about 10psi short of what I’d recommend. For those that say there isn’t a market, you’re in the wrong discipline. On my enduro bike I perseverate even a single PSI and change my pressure based on the terrain/course. I just installed a CushCore trying to push that lower limit downward (by improving compliance/traction). If you go too low you risk burping/rolling your tire or damaging your wheel. Too high and you’re wasting traction and off the trail. The margin? Probably a few PSI.

A question for Ray or anyone else who has tried Tyrewiz: Does it blink green if inside target range even if it’s NOT connected to a Garmin or phone? Or does it blink red or orange to show it’s not connected? Once installed, TyreWiz relays tire pressure data to a cycling computer or a smartphone every second. The TyreWiz app provides personalized recommendations and pressure alerts. For the first time, riders will have the ability to use highly accurate real-time information to make decisions that can affect rolling resistance, traction, tire wear, and rider comfort. The battery is a CR1632 battery that they claim will last about 300 hours of use. Also, it’s IPX7 waterproofed (so 30 minutes at 1-meter depth), and the weight is 10g each.Works with any tire that uses a removable Presta valve core: both tube and tubeless, and tires with anti-flat sealant. After that, attach a pump and air up until the wheels in your app turn green. Then go ride. The app gives a projected psi range of about +/- 5 psi for a given rider weight and tire size so you can fine tune based on real feel. Of note: I found that if you have a right-angled pump head, the weight of the head and hose could unthread the unit from the valve stem when installing the pump from the drive side. If that sounds like your setup, inflate from the non-drive side where gravity will help keep the TyreWiz from coming unthreaded.

Speaking of precision – exactly how much air/pressure do you lose when you take the pump off the valve and you hear that air spit out? The answer as I found out: Almost nothing, well under 1PSI (I suspect the air you’re hearing is actually from the pump, not your tire). I used the app to figure this out. Each TireWiz threads in to the valve core and transmits real-time data on tire pressure in Ant+ or Bluetooth to an attendant smartphone app for both Android and iOS (ready in June 2018) or newer cycling computers from Garmin, with other brands likely to follow. Through the app, TyreWiz suggests tire pressure based on wheel size (700c, 27.5/650b, or 26-inch) and tire width, plus user weight when dressed for riding. Additionally, the app acts as a digital pressure gauge. As you inflate your tires, an image of a tire on your screen turns from red to green so you know exactly when to stop pumping. Airspy is newer, so it might be supported for longer (app updates, chances of a Wahoo data field in the future etc.). This is pure speculation. I’ve been trying this out for the last week on my rides, and have come away pretty intrigued. So I figured I’d dive into all the details on how it works, and perhaps more interesting how I think it could be leveraged down the road. Since it’s not a super complex product, I’ll try and keep this post as streamlined as possible. The Tech Details:Finance is subject to application, financial circumstances and borrowing history. Performance Cycling Limited FRN: 720557 trading as Tredz are authorised and regulated by the Financial Conduct Authority. We are a credit broker not a lender – credit is subject to status and affordability and is provided by Mitsubishi HC Capital UK PLC. Terms & Conditions Apply. Lightweight and durable, TyreWiz adds only 10 grams to your tires. With an IPX7 waterproof and dustproof rating, you can confidently ride on any type of trail and know that your tire pressure sensor will keep going strong. TyreWiz reports data with +/-2% accuracy at a resolution of .1 PSI; vastly more accurate than any tire pump on the market. Quarq claims a battery life of 300 hours’ ride time. After a month of use, I’ve not yet been able to test that, but the batteries are widely available CR1632 watch cells. Above is some imagery from Quarq showing that, but I’ll capture my own photo goodness tomorrow when I steal someone’s mountain bike at Sea Otter. Wrap-up:

After which, you’ll go ahead and pump up the tube like you normally would. The top of the TyreWiz is identical to the valve stem that you just removed, so it’s just like normal there. Note that you don’t utilize your old valve stem in this design. Obviously, you probably want to keep it in your toolbox somewhere in case you remove the TyreWiz devices (especially if you have fancier tubes that cost a bunch). TyreWiz is durable, waterproof, powered by a long-lasting user-replaceable coin cell battery, and adds just 10 grams. The unit is compatible with removable Presta core valves in tube or tubeless tires, including those with sealant.The actual ID of the sensor is etched into the side of the sensor, making it super easy to figure out which is which. Now, behind the scenes, it’s also recording your tire pressure into the .FIT file, so that it shows up later on Garmin Connect, as well as for 3rd parties to access. The earlier beta Connect IQ apps I was using didn’t have the code to write to the .FIT file, so I can’t show you that today. I got the updated beta app about the exact same time I boarded the plane to the US on Monday. But the good news is I’ll be giving these a whirl mountain biking over the next few days at Sea Otter, so I’ll share some data there and post it here. Also note that there is an ANT+ Tire Pressure device profile in the works, making it such that this kind of data can be better standardized. Also note that via the app you can change how you’d like tire pressure to be shown – including PSI, BAR, and Kpa. While I can’t speak to the accuracy of my bike pump (some sort of Specialized model that says ‘Airtool’ on it), the two matched almost perfectly, within 1PSI, the entire time. Many downhill riders obsess over their tire pressure to the .1 PSI, but I cannot see these being on a downhill bike for costs vs. exposure reasons either. Now this is a SRAM sub, so my expectations about the product at market-entry point are a little bit higher than that – they look worse than the Garmin Vector pedal pods, add terrible asymmetry to the bike…

Use it for every ride to find the perfect combination of tire, wheel, and pressure in changing terrain and conditions. I should also note that Quarq isn’t the first looking at this space, in fact, 4 years ago I showed a prototype at Eurobike from Lightweight. And last year at Eurobike, Hutchinson also showed a prototype. Neither though have brought a product to market that’s ready to buy and about to ship. Smartphone app displays personalized recommendations, current tire pressure, and low/high-pressure alerts. Tyrewiz has a led that will tell you if you’re within target pressure without looking at your Garmin or phone. The led supposedly turns off when the tire rotates. And of course when the unit goes to sleep after a few minutes without movement. Your tires are the only thing connecting you to the road or trail, and having optimal tire pressure can have more impact on ride comfort than both frame and wheel choice combined. But finding the right tire pressure requires trial and error. TyreWiz is the first-of-its-kind tire pressure sensor for riders of mountain bikes and road bikes, taking the guesswork out of finding that optimal tire pressure. Lightweight and durable, TyreWiz adds only 10 grams to your tires. With an IPX7 waterproof and dustproof rating, you can confidently ride on any type of trail and know that your tire pressure sensor will keep going strong. TyreWiz reports data with +/-2% accuracy at a resolution of .1 PSI; vastly more accurate than any tire pump on the market. TyreWiz monitors air pressure in real-time and relays the data to a cycling computer or a smartphone. That information is relayed to the SRAM AXS app and delivers personalized recommendations and pressure alerts.TyreWiz gives riders access to highly accurate real-time tire pressure data to make decisions that can affect rolling resistance, traction, tire wear, and rider comfort.Airspy is slightly bulkier, and double the weight (maybe a little more, since you remove the valve core when installing Tyrewiz). On the positive, Airlspy attaches to a spoke to keep it securely in place. They call it “theft protection”, but that’s obviously a load of mumbo-jumbo. I hardly noticed the TyreWiz once installed. And riding fast descents on the road didn’t produce an unbalanced feel or the speed wobbles I expected. That may have to do with the minuscule 10-gram weight of each TyreWiz or the Zipp 303 NSW wheelset I was using. We’ve not seen one in the flesh yet, let alone tried it out, so for now you’ll have to just make do with the official press release. TyreWiz press release