Practical calculators, checklists, and planners built around real E36 work — fitment, swaps, retrofits, and build planning.
Compare wheel width, ET, tire size, and spacers.
Open →Compare two tire sizes — diameter, sidewall, speedo diff.
Open →See how spacers and offset changes affect stance.
Open →Parts, wiring, cooling, exhaust, first startup.
Open →Estimate costs across all build modules.
Open →Management, bags, compressor, tank, lines, wiring.
Open →Break your build into modules, track status.
Coming soonSwitches, regulators, wiring, install progress.
Coming soonStages and parts for climate control conversion.
Coming soonFloor, trunk, doors, firewall, rear sections.
Coming soonStore notes from scans, active and resolved faults.
Coming soonRust, trim, paint, interior, electrical, engine.
Coming soon