The Goodyear Connector 700×40 is a versatile gravel tire designed for mixed terrain riding. Setting it up tubeless offers better puncture protection, improved ride comfort, and reduced rolling resistance. This guide provides detailed, step-by-step instructions for installing, adjusting, and maintaining your Connector 700×40 tubeless system, troubleshooting common issues, and optimizing its performance.
Tools Required
- Tubeless-ready rims compatible with 700×40 tires
- Tubeless rim tape (width matched to rim)
- Tubeless valve stems
- Sealant (minimum 60 ml per tire)
- Floor pump or air compressor
- Bead jack or tire levers (plastic only)
- Clean rag and isopropyl alcohol
Preparation and Compatibility Check
Before starting, confirm that your wheels are tubeless-ready. Inspect the inner rim bed for a solid bead hook and ensure the internal rim width matches the recommended range for 40 mm tires. The Connector 700×40 works optimally on rims with internal widths between 19 mm and 25 mm. Using rims outside this range can affect bead seating and stability.
Installing Tubeless Rim Tape
A proper seal begins with high-quality rim tape. Clean the rim bed with isopropyl alcohol to remove dirt and oil. Starting opposite the valve hole, apply the rim tape under firm tension, overlapping the start point by at least 10 cm. Ensure the tape sits smoothly with no wrinkles or gaps. Puncture a small, clean hole at the valve location using a sharp tool to avoid fraying the tape.
Mounting the Connector 700×40 Tire
Mount one side of the tire bead onto the rim by hand. Insert the tubeless valve through the rim tape hole, securing it with the lock ring until snug but not over-tightened. Pour the recommended sealant directly into the tire casing before closing the second bead, or inject it through the valve core after mounting. Seat the second bead, leaving the section near the valve for last to ease installation.
Seating the Tire Beads
To seat the beads, use a floor pump or an air compressor for an initial burst of air. Hold the tire firmly at the bead area to prevent leaks while inflating. The Connector 700×40 typically seats with an audible pop on both sides. Inflate to around 40–45 psi initially to help the beads lock in place, then check for even seating along the entire rim circumference.
Distributing the Sealant
Once the beads are seated, shake and rotate the wheel in multiple directions to ensure the sealant coats the entire inner casing, especially around the bead and valve areas. Lay the wheel horizontally and rotate it several times to allow sealant to fill potential micro-leaks. Repeat for both sides.
Pressure Adjustment for Optimal Performance
After seating, adjust the pressure to match your riding conditions. For gravel and mixed-terrain riding, 30–40 psi is typical, depending on rider weight and terrain. Lower pressures improve traction and comfort, while higher pressures enhance rolling efficiency on hardpack surfaces.
Troubleshooting Common Set-Up Issues
Beads Won’t Seat – Ensure the rim tape is airtight, add more sealant, and try a higher initial inflation pressure with an air compressor.
Persistent Air Leaks – Check for damaged rim tape or loose valve stems. Reseat the tire and reapply sealant if needed.
Sealant Weeping Through Sidewalls – This is normal for some new tubeless casings. Ride the bike to help sealant fill pores, and top up if leakage continues.
Maintenance and Sealant Top-Up
Sealant dries over time, reducing its effectiveness. Check and refresh every 3–6 months depending on climate. If you hear dried sealant lumps inside, remove them before adding new sealant. Regularly inspect the tire tread and sidewalls for cuts or excessive wear, especially if riding on rocky trails.
Customizing and Optimizing Performance
The Connector 700×40 performs well across varied terrain, but customization can further enhance its capabilities:
- Sealant Choice – Use a premium sealant formulated for larger volume tires to ensure faster sealing of punctures.
- Tread Modification – For riders seeking faster rolling on pavement, lightly sanding the center knobs can reduce rolling resistance (only for experienced mechanics).
- Dual-Wheelset Setup – Pair the Connector with a more aggressive tire on the front for added cornering grip in loose conditions.
Comparison with Similar Models
Compared to similar 40 mm gravel tires, the Connector 700×40 offers a balanced tread pattern with a low-profile center and aggressive shoulder knobs. While tires like the WTB Riddler 700×45 offer more volume for comfort, they roll slightly slower on pavement. The Maxxis Rambler 700×40 provides similar rolling speed but less bite in loose terrain compared to the Connector’s pronounced shoulder lugs.
Understanding Drivetrain and Frame Compatibility
Before installation, verify that your frame and fork can accommodate 40 mm tires with tubeless setup, factoring in extra clearance for mud and debris. While tire clearance is independent of drivetrain, gravel groupsets like Shimano GRX or SRAM XPLR pair well with this tire’s performance range, offering gearing suited for mixed-surface riding.
FAQs
1. Can I set up the Connector 700×40 without an air compressor?
Yes, but you’ll need a high-volume floor pump with a strong initial burst to seat the beads.
2. How much sealant should I use?
Use at least 60 ml per tire for reliable sealing in gravel conditions.
3. Will tubeless reduce flats completely?
It greatly reduces puncture risk but does not eliminate it entirely, especially for large cuts.
4. Can I run this tire at road pressures?
It’s not recommended to exceed 60 psi, as higher pressures can compromise bead security.
5. How often should I replace rim tape?
Replace it if it shows signs of lifting, wrinkling, or leakage.
6. Are these tires suitable for bikepacking?
Yes, they offer excellent durability and mixed-terrain capability, making them a strong choice for bikepacking.