Audi RS5 B8 / B9
Customer-specification fitment guide for the Audi RS5 B8 / B9. 5x112, 66.5 / 73.1 with 66.5 hubring, hub-centric — referenced against recorded LFI customer builds and specified from the car outward.
LFI forged wheels for the Audi RS5 B8 / B9 use 5x112 PCD, 66.5 mm hub-centric planning for most records, RS brake-clearance review, and width, offset and tyre support matched to the actual car before production.
Recorded RS5 customer specs in this guide include 19x9.5, 19x10, 20x9.5, 20x10 ET14 and 20x10 ET25 directions on 5x112. LFI confirms the exact B8 or B9 centre bore, hardware seat, tyre diameter, brake template and offset before machining so the wheel is built around the car rather than a generic RS5 listing.
Chassis-Matched
Width, offset, and concavity specified to the vehicle — specified from measured vehicle requirements rather than shelf-size assumptions.
Brake Clearance
Spoke profile, barrel contour, and backpad machined to the brake package on the exact car.
Forged Response
Lower unsprung mass sharpens steering, braking feel, and ride control — immediately noticeable from the first drive.
| Area | Guide value | Fitment note |
|---|---|---|
| PCD | 5x112 | Confirmed at order time. |
| Centre bore | 66.5 mm hub-centric target | One older 73.1 / 66.5-ring build is retained as a customer record; new LFI builds should be machined hub-centric to the confirmed car. |
| Wheel sizes | 19x9.5 ET23 / 19x10 ET31 / 20x9.5 ET18 / 20x9.5 ET27 / 20x10 ET14 / 20x10 ET25 | Confirmed at order time. |
| Wheel models | CSF1 v2 / LFI custom monoblock / MF13 / MF101 | Face profile is selected around brake clearance and load specification. |
This photo-backed INV2023-34-INV484 RS5 Sportback case uses a 20x10 ET14 MF101 forged wheel in gloss black with 5x112 PCD and 66.5 mm hub-centric machining. LFI still confirms RS brake clearance, tyre shoulder, ride height, hardware seat, and load specification against the actual vehicle before production.
The primary row is drawn from recorded LFI build data. Alternate rows are specification directions — brake template, tyre shoulder, load target, and ride height are confirmed at order time.
| Direction | Wheel size | Wheel model | Best for | Notes |
|---|---|---|---|---|
| Primary | 19x9.5 ET23 | CSF1 v2 | Real LFI build record | LFI customer fitment record. Confirm tyre shoulder, brake template, ride height, and final offset. |
| Alternate | 19x10 ET31 | LFI custom build | Customer-proven direction | LFI customer fitment record. Confirm tyre shoulder, brake template, ride height, and final offset. |
| Recovered RS5 | 20x9.5 ET18 | LFI custom monoblock | B9.5 aggressive street | Blue RS5 customer case. Confirm RS brake clearance, tyre shoulder, ride height, and final offset. |
| Recovered RS5 | 20x10 ET25 | LFI custom monoblock | Maximum concave street | Yellow RS5 customer case. Confirm RS brake clearance, tyre shoulder, ride height, and final offset. |
| Photo-backed RS5 | 20x10 ET14 | MF101 | Gloss black wide street fitment | INV2023-34-INV484 customer case. Confirm RS brake clearance, tyre shoulder, ride height, and final offset. |
| Additional | 20x9.5 ET27 | MF13 | Customer-proven direction | LFI customer fitment record. Confirm tyre shoulder, brake template, ride height, and final offset. |
Use the same LFI Concave Slider from the full guide to see how offset, wheel width and diameter change the visual face depth for a custom forged wheel.
Wheel strength is not a single number. Vertical load, braking torque, drive torque, spoke-root stress, hub-pad stress, and bolt-seat behavior are all part of the engineering package — validated together, not in isolation.
The RS5 is a fast Quattro coupe with wide tires, large brakes, and real braking load, so the wheel should carry more than the static vehicle weight alone suggests. For selected RS5 road-use specifications, LFI positions 690 kg per wheel as the practical starting point. For repeated high-speed use, sticky tires, harsher roads, or extra-reserve applications, 790 kg per wheel can be evaluated where the wheel family allows it.
Wheel strength is broader than vertical load. LFI also reviews acceleration, braking, cornering, potholes, tyre grip, hub-pad stress, bolt-seat stress, spoke-root stress, and rim-barrel torque reaction against an approximately 1,700 Nm per wheel static torque load target.
For the full engineering story behind each wheel, LFI's How LFI Wheels Are Made page covers design, forging, CNC machining, finishing, and quality control.
| Wheel load rating | Per-axle equivalent | Margin vs axle baseline | Status | How LFI positions it |
|---|---|---|---|---|
| 590 kg | 1,180 kg per axle | ~9% margin | Low reserve | Use only after exact vehicle label, tyre load index, and duty cycle are confirmed. |
| 690 kg | 1,380 kg per axle | ~28% margin | Preferred | Practical RS5 road-use and fast-road target when tyre load index and intended use are correctly matched. |
| 790 kg | 1,580 kg per axle | ~46% margin | Extra reserve | Useful for repeated high-speed, harsher-road, sticky-tyre, heavier-duty, or extra-reserve applications. |
| Validation load case | Reference basis | LFI target direction | Why it matters |
|---|---|---|---|
| Radial vehicle load | Vehicle mass, passengers, tyre package, and selected wheel load specification | 690 kg preferred target | Vehicle mass and sustained road loading. |
| Torque load | RS5 braking, tyre rolling radius, tyre grip, and drivetrain torque review | ~1,700 Nm per wheel | Loads the hub pad, bolt seats, spoke roots, and rim barrel. |
| Cornering load | Lateral force from road grip, sticky tires, and fast-road or track use | Application-specific | Lateral loading under cornering. |
| Combined static load case | Radial load + torque load + cornering load | Application-specific | Real-world loads are combined, not isolated. |
Engineering Article
For forged wheel applications, vertical load is one part of the engineering picture. LFI also reviews spoke-root stress, hub-pad loading, bolt-seat behavior, rim-barrel stress, and combined static road-load cases where relevant.
| Term | Meaning | How it applies to LFI custom wheels |
|---|---|---|
| JWL | Japanese technical standard for light alloy wheels. | Used as a reference standard for relevant load and durability requirements. |
| VIA | Japanese third-party wheel registration and verification system. | Applies only to specific wheel models/specifications that are formally registered. |
| TÃœV | European technical testing or certification framework. | Applies only when a specific wheel/specification has supporting TÃœV documentation. |
| SAE | Common industry test framework for aftermarket wheel performance and impact evaluation. | Useful for impact and fatigue validation depending on market and specification. |
| Internal validation | LFI's own engineering and test process. | Used for bespoke specifications built from validated design families. |
| Static FEA | Computer-based engineering simulation. | Used before machining to evaluate stress, weight, torque load, and clearance. |
Selected high-volume reference specifications may be supported by external lab reporting or third-party documentation. Bespoke Audi RS5 B8 / B9 specifications are engineered from the same design families and reviewed through LFI's internal design, load, brake-clearance, and fitment-validation process. See LFI's Testing & Compliance for published standards and test references.
A recorded LFI customer specification. Final width, offset, tyre pairing, ride height, hardware seat and load specification are confirmed against the actual vehicle at order time.
This recovered blue RS5 case from the original combined guide uses the widebody arch volume to run an aggressive ET18 offset while retaining square tyre logic. The main engineering priority is RS brake clearance, because the B9 / B9.5 RS5 front caliper and optional ceramic brakes can eliminate many off-the-shelf wheel options.
This recovered yellow RS5 case uses a 20x10 ET25 square setup for a deeper concave profile and large 275-section tyre support. Heavy backpad pocketing helps control weight despite the wider barrel and electroplated finish.
A recorded LFI customer specification. Final width, offset, tyre pairing, ride height, hardware seat and load specification are confirmed against the actual vehicle at order time.
This is an actual LFI customer build record. Installed photos will be added once the customer provides them.
A recorded LFI customer specification. Final width, offset, tyre pairing, ride height, hardware seat and load specification are confirmed against the actual vehicle at order time.
This is an actual LFI customer build record. Installed photos will be added once the customer provides them.
This photo-backed INV2023-34-INV484 RS5 Sportback case uses a 20x10 ET14 MF101 forged wheel in gloss black with 5x112 PCD and 66.5 mm hub-centric machining. LFI still confirms RS brake clearance, tyre shoulder, ride height, hardware seat, and load specification against the actual vehicle before production.
These wheel models keep the guide easy to scan.
6061-T6 forged aluminium with custom width, offset, PCD, centre bore, finish, and brake-clearance review for this platform.
6061-T6 forged aluminium with custom width, offset, PCD, centre bore, finish, and brake-clearance review for this platform.
6061-T6 forged aluminium with custom width, offset, PCD, centre bore, finish, and brake-clearance review for this platform.
LFI supports Audi RS5 B8 / B9 customers with vehicle-specific forged wheel consultation, DDP supply where available, and direct Singapore / Malaysia support. Fitment recommendations are based on the confirmed vehicle, brake package, tyre target, load requirement, and intended use.
LFI helps owners choose between OEM+, lightweight square, brake-clearance, show-style, and track-focused forged setups.
City roads, highways, potholes, wet-weather tires, ride comfort, and tyre availability can all change the best wheel and tyre recommendation.
DDP shipping available to major markets. The price quoted is the price paid — no surprise duties or taxes on delivery.
Singapore customers can visit LFI at 76 Playfair Road, #01-03, Singapore 367996 to view forged wheel samples, finishes, concavity profiles, and selected in-stock wheels.
Malaysia customers can order directly with LFI and request pre-production consultation for road use, track use, tyre availability, and brake clearance.
| Reference | What it supports | Link |
|---|---|---|
| Audi Owner Manuals | Vehicle owner documentation for tyre pressure, wheel-change context, and model-year reference. | Audi Owner Manuals |
| LFI Google Maps Profile | Local showroom verification, map listing, review context, and Singapore business-location confirmation. | LFI Google Maps profile |
| JWL / VIA Wheel Standards | Japanese light-alloy wheel standard and third-party verification context for JWL / JWL-T marking and VIA registration. | Japan Light Alloy Automotive Wheel Testing Council |
| TÃœV SÃœD Wheel Testing | Independent laboratory testing context for wheels, materials, components, fatigue testing, impact testing, and international wheel standards. | TÃœV SÃœD Wheel Testing |
| Standards Testing Laboratories | Automotive wheel test-lab context for fatigue, impact, load / deflection, and compliance-related validation. | STL Testing Services |
| SAE J2530 | Aftermarket passenger-car and light-truck wheel performance requirements and test-method context. | SAE J2530 |
Yes. Every case study is drawn from a recorded LFI customer build and specification.
The RS5 fitment records in this guide use 5x112 PCD. LFI still confirms the exact car, hardware seat, centre bore, and brake package before production.
Most RS5 builds in this guide use a 66.5 mm hub-centric target. LFI confirms the exact car before machining so the wheel can be built hub-centric for the vehicle.
The customer records include 19x9.5 ET23, 19x10 ET31, 20x9.5 ET18, 20x9.5 ET27, 20x10 ET14, and 20x10 ET25. Final tyre pairing, brake clearance, and ride height still need review.
Yes. Offset, brake clearance, and body clearance are machined into the wheel — no spacer dependency.
Some recorded builds have complete specification data while customer images are still pending.
Model year, trim, brake package, tyre target, ride height, alignment, PCD, centre bore, hardware seat, centre-cap plan, finish, load target, and intended use.
Yes. LFI supports Singapore and Malaysia locally, and ships worldwide with remote fitment consultation.
Yes. Every finish is custom — gloss, satin, brushed, polished, bronze, black, silver, and bespoke options are available.
No. The photographed setup is a reference. Width, offset, concavity, finish, and tyre pairing are adjusted to your car and priorities.
Yes, when the caliper template, barrel profile, spoke shape, backpad, and offset are specified correctly. LFI validates brake clearance as part of the build.
Yes. A comfort-biased setup uses conservatively sized wheels and tyres with enough sidewall for road use.
Yes. Fender clearance, steering lock, tyre shoulder, ride height, and alignment must be reviewed as a package.
Yes, when the cap diameter, clip style, pocket depth, and face profile are specified in the build.
Yes. A square setup gives you tyre rotation, predictable handling, and a clean road package.
Yes. Staggered setups are available when the platform, tyre diameters, and drivetrain support them.
Two tyres with identical printed sizes can fit differently. Shoulder profile affects fender clearance, steering lock clearance, and final stance.
Offset alone does not describe a wheel. Width, tyre size, brake clearance, hub geometry, concavity, and ride height all determine whether the setup works.
Yes. International orders are supported with remote fitment consultation.
Share your model year, brake package, tyre target, ride height, alignment, centre-cap plan, and finish target so LFI can confirm the forged wheel specification.