The best auto racing suit isn’t always the most expensive option. It’s the one that fits your body, meets your track or sanctioning body’s safety requirements, and matches the type of racing you do.

A racing fire suit protects drivers and crew members from fire, extreme heat, and abrasions caused by an accident. Proper pit crew apparel gives crew members similar protection while working around the car. Certification, construction, comfort, and racing suit sizing all affect how well the suit performs on the track. This guide explains how to choose a suit for your racing environment and the way you compete.

How to Choose the Best Auto Racing Suit

Start by working through these main buying factors: 

• Safety certification: Determine whether your series calls for SFI or FIA.
• Fit: Look for full movement in the seated driving position.
• Material: Compare weight, breathability, durability, and fire resistance.
• Number of layers: Balance thermal protection with weight and bulk.
• Climate and comfort: Account for cockpit heat, race length, and mobility.
• Budget: Cover the essentials first, then consider premium upgrades.

Your suit should work with the rest of your fire-retardant clothing and cockpit safety equipment, including your HANS device, restraints, belts, and seat.

Behrent’s carries racing suits from trusted brands such as Impact, RaceQuip, K1 Race Gear, MPI, and Simpson.

Use this quick comparison to narrow down the type of racing suit that best fits your needs: 

Start With Your Racing Series Requirements

Before buying a racing suit, check the rules for your track, class, event, and sanctioning organization. The suit rating you need can vary by vehicle and form of racing, including drag, circle track, road racing, time attack, and autocross. Some series specify an SFI rating, while others accept or require FIA certification.

Your suit is only one part of a complete race car safety apparel setup, which may also include fire-resistant base layers, gloves, shoes, socks, and a head sock. 

FIA vs. SFI Racing Suit Certifications

The FIA versus SFI racing suit decision depends on which standard your racing organization accepts. SFI 3.2A ratings are common in many U.S. series, while FIA 8856-2018 racing suits are widely used in road racing and international competition. Neither standard is automatically better, and some suits carry both certifications.

SFI vs. FIA Racing Suit Comparison

Understanding SFI Racing Suit Ratings

SFI ratings show a suit’s tested level of thermal protection. A higher number after the slash indicates a higher protection level, so SFI 3.2A/5 provides more than SFI 3.2A/1. The chart shows the approximate time to a second-degree burn threshold in standardized testing.

Note: These are laboratory estimates. Actual protection varies with suit condition, fit, undergarments, fire intensity, and exposure.

Nomex® and Other Racing Suit Materials

A Nomex® racing suit uses inherently flame-resistant fibers that won’t melt or drip when exposed to high heat. Nomex is widely used because it provides dependable protection while keeping the suit relatively lightweight, flexible, and durable.

Some racing suits use flame-resistant or treated cotton instead. These materials can be a more affordable option, but they’re often heavier and may not breathe as well as premium fabrics.

Material choice can affect care and service life. Follow the manufacturer’s washing instructions to preserve the fabric’s performance.

1-Layer vs. 2-Layer vs. 3-Layer Racing Suits

A one-layer suit is usually lighter, more flexible, and more affordable, making it practical for entry-level or occasional racing. A one-layer suit adds thermal protection while still offering a good balance of weight, mobility, and heat management. A three-layer suit can provide even more protection, but it may also feel heavier and warmer in the cockpit. Layer count alone doesn’t determine safety. Compare the suit’s complete construction and tested rating, not just the number of layers.

Racing Suit Sizing and Proper Fit

Proper racing suit sizing should give you room to move without excess fabric bunching around the seat, sleeves, or legs. Test the fit while seated in the driving position, reaching for the wheel, shifting, and moving your shoulders. A suit that’s too tight can restrict movement, while an oversized suit can feel bulky in the cockpit.

Fit varies by brand and cut, and K1, Simpson, and Impact may use closer, more tailored sizing, so compare your measurements with the manufacturer’s chart instead of relying on your everyday clothing size.

Custom Racing Fire Suits

A custom racing suit can be a smart choice when standard sizes don’t fit well or when you want specific design features. Custom suits can be built to your measurements and may include options such as stretch panels, gussets, pockets, linings, colors, and embroidery. Behrent’s can help with measurements and available options. Contact Behrent’s to discuss a custom racing fire suit.

Features Worth Paying For

Premium features matter most to frequent racers who spend extended time behind the wheel. Lightweight fabrics and breathable inserts help manage heat. Floating sleeves and stretch panels improve movement, while knit cuffs keep the sleeves and legs in place. Durable zippers and internal pockets add everyday convenience.

When Should You Replace a Racing Suit?

Inspect your suit regularly and replace it after being exposed to fire or when you find torn fabric, damaged seams or closures, heavy wear, contamination, or any loss of protective performance. A well-maintained suit can last several years, but condition, care, and certification status determine when it needs replacement.

Choosing the Right Racing Suit for Your Budget

Match your spending to how often you race and which upgrades will make a real difference behind the wheel. 

• Entry-Level Racers: Start with a properly rated suit that fits well and covers the essentials.
• Weekend Competitors: Look for durable construction that can handle regular use.
• Serious Competition: Consider premium materials and weight-saving construction that can reduce fatigue.

Shop Racing Suits

The best auto racing suit is the one that fits properly, meets the right standard, and supports the way you race. Compare racing suits from trusted brands at Behrent’s Performance Warehouse and head to the track with confidence.

Frequently Asked Questions About Racing Suits

Can you wash a racing suit at home?

Many racing suits can be washed at home, but always follow the care label and manufacturer’s instructions. Use lukewarm water and a mild detergent, and avoid bleach, fabric softener, harsh chemicals, and high heat, which can damage the fabric or protective components. 

Do racing suits shrink after washing?

Racing suits can shrink when exposed to excessive heat during washing or drying. Follow the temperature and drying instructions on the care label, especially for suits made with Nomex® or treated cotton.

Can you wear anything underneath a racing suit?

Wear clean, close-fitting garments that won’t restrict movement, and use fire-resistant base layers when required or recommended. Avoid synthetic street clothing that can melt under high heat. Fire-resistant underwear, socks, and a head sock can add coverage as part of a complete safety setup.

Do racing gloves and shoes need the same certification as the racing suit?

Not necessarily. Racing suits, gloves, and shoes are certified separately and may follow different standards. Check the rules for each item because an event may require approved gloves and shoes even when their certification labels differ from the suit’s.