BUILT FOR THE DRIVE. AND EVERYTHING AFTER.THE ENTHUSIAST’S FIELD GUIDE +
GEARLINE↗
Tools
Home / guides
THE GEARLINE FIELD GUIDE

A little knowledge. A better drive.

Our starting collection of buying guides, explainers, and ownership checklists.

16 guides in this collectionSearch the field guide
Wheel and Brembo brake detail on a Honda Civic Type R
BUYING FRAMEWORK2 MIN READ

A daily-driver coilover buying guide

Compare fitment, usable adjustment, support, and the complete installed cost.

Read the guide Black UK-market 2018 Subaru BRZ
DOCUMENTED ISSUES3 MIN READ

BRZ documented issues: recalls, evidence, and inspection

Check the 2013 valve-spring recall by VIN and separate observations from a verified diagnosis.

Read the guide Black UK-market 2018 Subaru BRZ
MAINTENANCE3 MIN READ

BRZ maintenance: build a dated service plan

Use a 2015 US schedule example to plan service, verify records, and budget with real quotes.

Read the guide Black UK-market 2018 Subaru BRZ
OWNERSHIP COSTS2 MIN READ

Budget for the car after the purchase

Separate predictable expenses, initial work, and a repair reserve before planning upgrades.

Read the guide Mazda MX-5 NC, photographed outside the US
GARAGE CULTURE2 MIN READ

Every build has a story. Keep yours.

A useful build journal captures the decisions, the costs, and what you would do differently.

Read the guide Black UK-market 2018 Subaru BRZ
BUILD PLANNING2 MIN READ

First BRZ mods for a daily driver

Choose upgrades around your roads, your priorities, and the car you actually drive.

Read the guide Black UK-market 2018 Subaru BRZ
BUYING GUIDE2 MIN READ

First-generation Subaru BRZ buying guide

A practical starting point: inspect the history, understand the modifications, and budget beyond the asking price.

Read the guide Mazda MX-5 NC, photographed outside the US
BUYING GUIDE3 MIN READ

Mazda MX-5 Miata NC buying guide

Choose a roof and transmission, check the actual specification, and build a sensible inspection plan.

Read the guide Mazda MX-5 NC, photographed outside the US
INSPECTION GUIDE3 MIN READ

NC Miata inspection: cooling, roof, and repair evidence

A focused inspection framework with a manufacturer water-pump bulletin and questions for the workshop.

Read the guide Mazda MX-5 NC, photographed outside the US
MAINTENANCE3 MIN READ

NC Miata maintenance: choose the right schedule

Understand selected 2015 US normal and severe-use intervals, calendar deadlines, and service records.

Read the guide Wheel and Brembo brake detail on a Honda Civic Type R
DATA EXPLAINED2 MIN READ

Power-to-weight: what the ratio does and does not tell you

Compare units and measurement methods before drawing conclusions from a horsepower figure.

Read the guide Black UK-market 2018 Subaru BRZ
OWNERSHIP GUIDE2 MIN READ

Used BRZ inspection checklist

Questions to bring to a viewing and an independent pre-purchase inspection.

Read the guide Mazda MX-5 NC, photographed outside the US
COMPARISON2 MIN READ

Used BRZ vs. NC Miata: which fits your life?

A decision guide built around your daily routine, roof preference, and the specific cars on your shortlist.

Read the guide Wheel and Brembo brake detail on a Honda Civic Type R
THE EXPLAINER2 MIN READ

Wheel offset explained

Understand offset, width, and how a new wheel changes its position relative to the hub.

Read the guide Black UK-market 2018 Subaru BRZ
CAR CARE3 MIN READ

Your first car-care kit: buy for the routine

Build a manageable wash routine, separate your towels, and select products for the surfaces you have.

Read the guide Mazda MX-5 NC, photographed outside the US
FIRST STEPS2 MIN READ

What to do before modifying a used car

Establish a healthy baseline, understand what is already fitted, and leave room for maintenance.

Read the guide