A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Prismatic Curved Diamond Pattern No Background
Source GDJ
A seamless stone-like background for blogs or any other type of websites.
Source V. Hartikainen
A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen
The classic notebook paper with horizontal stripes.
Source Are Sundnes
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
A seamless background tile of aged paper with shabby look.
Source V. Hartikainen
This background image is great for using in web design or graphic design projects. And don't forget to visit the homepage. I frequently update this resource with fresh tileable backgrounds.
Source V. Hartikainen