2016 Tiffin Allegro 8-Lug Brake Rotors: Dana 17060s vs Ford F53 Parts

Bottom Line Up Front

You're dealing with a common issue where your 2016 Tiffin Allegro 36 UA on the Ford F53 chassis has the 8-lug rear axle configuration, but parts suppliers are defaulting to the more common 10-lug setup when you search by VIN or chassis model. The 8-lug rotors for your axle are available, but you need to search specifically by axle model rather than vehicle VIN. Check with Ford Sterling axle dealers for the correct part number or equivalent aftermarket options from Raybestos (part number 980439R) or Wagner (part number BD980439). Fleet brake suppliers and heavy-duty truck parts dealers will have better inventory than standard auto parts stores.

Root Causes

The confusion stems from Ford offering multiple rear axle configurations on the F53 chassis depending on GVWR and application. While many F53 chassis came with 10-lug rear axles, Tiffin specifically opted for the 8-lug configuration on certain models to meet their weight distribution and braking requirements. Parts databases often default to the most common configuration when you search by VIN, which leads to the 10-lug results you're seeing.

This rear axle configuration was commonly used on medium-duty trucks and some RV applications, but it's not as prevalent as the 10-lug setups. This means fewer parts suppliers stock them regularly, and many counterpersons aren't familiar with the variations. Additionally, some aftermarket catalogs may not have updated cross-references for RV-specific axle applications, focusing instead on the commercial truck market where these axles are more common.

Before You Start

Before ordering parts, verify your exact rotor specifications by measuring your current rotors. The 8-lug configuration typically uses rotors that are approximately 13 inches in diameter with an 8-bolt pattern on 6.5-inch centers. Check the rotor thickness - they're usually around 1.25 inches thick when new. Also note the hub bore diameter and any specific mounting requirements.

Take photos of your current brake setup including the rotor, caliper bracket, and hub assembly. This will help parts suppliers verify compatibility when you're sourcing components. Some suppliers may ask for the date code on your axle housing, which is typically stamped on the differential cover or axle tube. Having your exact axle build date can help narrow down the correct parts variation.

Check if your rotors are still serviceable through turning rather than replacement. Given the difficulty in sourcing these specific rotors, having them machined at a brake shop might be more cost-effective if they have sufficient material remaining. Most rotors can be turned once or twice if the wear isn't excessive.

The Repair Process

Contact fleet maintenance suppliers or heavy-duty truck parts dealers rather than standard auto parts stores. Companies like FleetPride, 4 State Trucks, or Ford Sterling axle dealers will have better access to Ford Sterling axle components. When calling, specify you need rotors for an 8-lug rear axle, not a Ford F53 chassis - this will get you to the right parts specialist.

Online sources to try include RockAuto (search by axle model), Brake Parts Inc, or Beck/Arnley who often have hard-to-find brake components. You can also check with Tiffin directly - their parts department may stock these rotors or can provide the exact Meritor part numbers. Sometimes RV manufacturers maintain inventory of chassis components that are harder to source through normal channels.

For the brake pads, you'll have better luck since they're more commonly stocked. Look for medium-duty or severe-service pads designed for the caliper on your Dana axle. Wagner ThermoQuiet or Raybestos Element3 lines typically have coverage for these applications. Make sure to specify the 8-lug configuration when ordering to ensure you get the correct caliper bracket hardware if needed.

When you find the parts, order everything at once including any hardware kits, as these specialty components may have longer lead times. Consider ordering an extra set of rotors if you find them at a good price, as they're not wearing items you'll need frequently but can be challenging to source when needed.

Professional Help Needed

If you can't locate the correct rotors through normal channels, contact a commercial brake shop that services medium-duty trucks or school buses. These shops often have relationships with Meritor distributors and can source hard-to-find Dana axle components. They may also have experience with similar RV brake configurations and can recommend alternatives or modifications.

Consider reaching out to other Tiffin owners through RV forums or Facebook groups - someone else with the same model year and configuration may have sourced these parts recently and can share supplier information. The Tiffin Motorhome Club or FMCA technical forums often have members who've dealt with similar brake component sourcing challenges.

As a last resort, a machine shop might be able to manufacture rotors if you can provide a good core and specifications, though this would be expensive. Use only OEM or certified aftermarket brake components that meet DOT specifications for your vehicle.