Bird's eye view of a 2004 Audi A4 bike roof rack decked out with the Thule 400XTR Rapid Aero Car Rack System (with Thule 2114 Fit Kit), Thule 872XT Wind Fairing, Thule 518 Echelon Bike Racks and Thule 593 Wheel Holders.

Nothing like a sweet Thule Rack base system with bike racks to snaz up your Audi A4.  Here we have a 2004 Audi A4 bike roof rack system using the Thule 400XTR Rapid Aero Base Rack System (includes Thule 400 XTR Rapid Aero Foot Pack, Thule Fit Kit 2114, and Thule RB 47 Rapid Aero Bars) with the Thule 872XT wind fairing mounted to the front Rapid Aeo load bar. Also mounted to the Rapid Aero Bars, using the Thule X-Adapt 9 adapters, are two Thule 518 Ecehelon fork mounted bike trays and two Thule 593 Wheel Holders.  A Thule 596 lock pack 6 pack of locks keeps it all secure from theft. 

Complete 2004 Audi A4 roof bike rack install details.

Audi A4 roof bike rack with Thule 400XT roof racks and Thule 518 Echelon bike tray

 The Thule 400XT base rack system installed on this Audi A4 adds a sporty flair to this fine vehicle, but its main purpose, of course, is carrying a bicycle on the roof.  The Thule 518 Echelon does a great job of that and is in fact Thule’s most secure roof top bike carrier.

Audi A4 wagon roof rail bike rack system with Yakima Railgrab base rack and Yakima Steelhead Bike racks

Here’s nice sunny shot of an Audi A4 wagon sportin’ the Yakima RailGrab base system mounted to the raised side rails.  The RailGrab towers can also mount to flush side rails as well as oversized side rails.  Mounted to the crossars are two Yakima SteelHead bike racks.  This guy has chosen to go with the Yakima 58″ Round Bars instead of the recommended Yakima 48″ Round Bars, which leaves plenty of space between his bike trays for perhaps a Yakima cargo box, cargo basket, or rooftop cargo bag.

Q: I’ve been searching for compatible options for a 2009 Audi A4 roof rack (sedan model). I can’t find any car racks that work with this car. Am I out of luck?

A: The Yakima Q Tower multi-purpose base rack system is works superbly as a 2009 Audi a4 sedan car rack system. Attaches directly to your vehicle’s smooth rooftop that currently has no factory rack, factory side rails, rain gutters etc. Provides a sturdy base rack system capable of safely transporting all kinds of gear. You can attach any Yakima roof mount bike carriers to the base rack cross bars.