Which car thresholds are best to choose in: comparison of materials, types and brands

A car's sills are not just an element of the exterior, but a critically important part that affects the safety, corrosion resistance and even the aerodynamics of the car. Choosing suitable thresholds can save the body from rust, improve the appearance of the car after an accident or tuning, and also protect against mechanical damage when driving off-road. However, the market offers dozens of options: from budget plastic linings to premium aluminum structures with anti-corrosion coating.

In this article we will look at all types of thresholds (factory, universal, sports), compare materials (steel, aluminum, composites), we'll tell you how to choose them by car make (from VAZ up to Mercedes), and we will give you a checklist for purchase. We will pay special attention hidden problems of cheap thresholds, which can accelerate body corrosion by 2–3 times. If you are planning to replace or install thresholds yourself, here you will find step-by-step instructions and typical mistakes of craftsmen.

1. Why are thresholds needed in a car: functions and consequences of their absence

Thresholds perform several tasks at once, which many drivers are not even aware of:

• 🛡️ Corrosion protection — close welds and body cavities where moisture accumulates.
• 🚗 Body rigidity — reinforced sills increase the stability of the car during side impacts (important for safety in case of an accident).
• 🎨 Aesthetics — mask rust, scratches and traces of repairs after accidents.
• 🛠️ Practicality — overhead thresholds protect the paintwork from chips when boarding passengers or loading luggage.

If the thresholds are damaged or missing, the consequences can be critical:

• ⚠️ Rust in 1–2 years — open body cavities begin to rot from the inside, especially in Russian winter conditions.
• ⚠️ Reduced body rigidity by 15–20% - the car holds the road worse, the risk of deformation in an accident increases.
• ⚠️ Problems with selling cars — the absence of thresholds or their poor condition reduces the cost of the car by 5–10%.

According to statistics Autostat, in 60% of cases, body corrosion begins from the thresholds. At the same time, replacing rusted thresholds costs 2–3 times more than timely installation of protective overlays or repair of minor damage.

2. Types of thresholds: factory, universal and sports

Thresholds are divided into three main types, each of which solves its own problems. The choice depends on the purpose: restoration after an accident, tuning or corrosion protection.

Threshold type	Material	Purpose	Average price (per pair)	Difficulty of installation
Factory (OEM)	Zinc coated steel	Replacement of damaged original thresholds	from 8,000 to 30,000 ₽	⭐⭐⭐⭐ (welding, anticorrosive)
Universal pads	Plastic, ABS, rubber	Protection from chips and moisture	from 1,500 to 6,000 ₽	⭐ (on your own with glue)
Sports (tuning)	Aluminum, carbon fiber	Improved aerodynamics and appearance	from 15,000 to 100,000 ₽	⭐⭐⭐ (bolt/glue mounting)
Reinforced (off-road)	Steel 3–5 mm, aluminum	Off-road protection	from 20,000 to 50,000 ₽	⭐⭐⭐⭐ (welding or bolts)

Factory thresholds is the best choice for disaster recovery. They follow the geometry of the body, but require welding and anti-corrosion treatment. Original thresholds for Toyota Camry or Volkswagen Passat can cost up to RUB 40,000 per pair, but guarantee a perfect fit.

Universal pads — a budget solution for protecting paintwork. You can glue them yourself, but they will not save you from rust if the body is already damaged. Popular brands: Hecko, SideStep, Autostyle.

What are the dangers of cheap pads?

Cheap plastic thresholds (price up to 2,000 ₽) are often made from recycled materials and lose their shape in temperatures below -20°C. Even worse, they can peel off as you go, damaging the paintwork. In 2023, Rospotrebnadzor recalled a batch of AutoPro brand overlays due to toxic glue that causes allergies.

3. Threshold materials: comparison of steel, aluminum and composites

The strength, weight, corrosion resistance and price of the thresholds depend on the material. Let's look at the pros and cons of each option.

3.1. Steel thresholds

Pros:

• 💪 Maximum strength - can withstand impacts during an accident.
• 🔧 Easy repair - you can cook, straighten, paint.
• 💰 Low price - from 3,000 ₽ for universal models.

Cons:

• ❌ They rust without anti-corrosion treatment.
• ⚖️ Heavy - increases the weight of the car.
• 🛠️ Difficult installation - requires welding.

3.2. Aluminum thresholds

Pros:

• ⚡ Lightweight - weight is 40-50% less than steel.
• 🛡️ Do not rust - ideal for humid climates.
• 🎨 Modern design - popular in tuning.

Cons:

• 💸 Dear ones - from 15,000 ₽ per pair.
• 🔨 Difficult to repair - they don’t cook, just replace.
• 🛑 Less impact strength.

3.3. Composite and plastic thresholds

Pros:

• 💰 Cheap - from 1,000 ₽ for overlays.
• 🔧 Easy installation - glued in 10 minutes.
• 🎨 Large selection of designs.

Cons:

• 🚫 Does not protect against corrosion.
• ☀️ They burn out in the sun.
• ❄️ They crack in the cold.

For off-road cars (for example, Toyota Land Cruiser or Nissan Patrol) are often chosen reinforced steel thresholds 4–5 mm thick. They protect the body when driving on rocks and forest roads, but require regular anti-gravel treatment.

4. How to choose thresholds by car make and model

Universal thresholds do not suit all cars. For a perfect fit, it is better to choose models designed for a specific brand. Let's consider popular options:

4.1. Thresholds for domestic cars (VAZ, GAZ, UAZ)

For Lada Vesta, Granta or Priora will fit:

• 🔹 Steel thresholds "AvtoVAZ" (OEM) - from 5,000 ₽, require welding.
• 🔹 "Hecko" pads — from 2,500 ₽, glued with double-sided tape.
• 🔹 Aluminum thresholds "Tuning-Sport" — from 12,000 ₽, for street racing.

4.2. Thresholds for foreign cars (Toyota, Volkswagen, Hyundai)

For Toyota Corolla or Hyundai Solaris:

• 🔹 Original Toyota thresholds — from 25,000 ₽, 2-year warranty.
• 🔹 Universal pads "SideStep" — from 4,000 ₽, suitable for 90% of sedans.
• 🔹 Carbon sills "Seibon" — from 40,000 ₽, for tuning.

4.3. Thresholds for premium cars (BMW, Mercedes, Audi)

For BMW 5 Series or Mercedes E-Class:

• 🔹 OEM sills with chrome inserts — from 50,000 ₽.
• 🔹 Aluminum thresholds "H&R" - from 30,000 ₽, reduce ground clearance by 10 mm.
• 🔹 Ceramic threshold coating — from 15,000 ₽ (protection against chips for 5 years).

Check compatibility with car model (by VIN or body)|

Measure the length and width of the original thresholds|

Specify material (steel/aluminium/plastic)|

Check the package (fasteners, instructions, warranty)|

Compare prices in 3–4 stores-->

For crossovers (for example, Kia Sportage or Renault Duster) are often chosen universal thresholds with rubber inserts — they protect from dirt and do not slip when landing.

5. Setting thresholds: step-by-step instructions and typical mistakes

You can install the thresholds yourself (overlays) or entrust them to professionals (welded thresholds). Let's consider both options.

5.1. Installation of overhead thresholds (without welding)

You will need:

• 🔧 Set of screwdrivers.
• 🧴 Degreaser (WD-40 or alcohol).
• 📏 Tape measure and masking tape.
• 🔥 Hairdryer (for heating the glue).

Step by step instructions:

1. Clean the surface of the threshold from dirt and rust (use a wire brush).
2. Degrease the surface and back of the pad.
3. Attach the threshold and mark the attachment points with tape.
4. Apply glue (eg 3M VHB) or use double-sided tape.
5. Press the threshold and heat it with a hairdryer for better adhesion.
6. Do not wash your car for 24 hours.

5.2. Installation of welded thresholds (for repairs)

This process is more complex and requires:

• 🔥 Welding machine (semi-automatic).
• 🛠️ Grinder with cutting wheel.
• 🧤 Protective equipment (mask, gloves).
• 🎨 Anti-corrosion treatment (Movil, Dinitrol).

Typical installation errors:

• ❌ Incomplete rust removal — the new threshold will rust in 1–2 years.
• ❌ Weak welding - the seams will crack under load.
• ❌ Lack of anticorrosive — body cavities rot from the inside.
• ❌ Incorrect fit — the thresholds stick out or dangle.

⚠️ Attention: When welding thresholds on cars with electronic assistance systems (for example, Toyota Safety Sense or Bosch ESP) be sure to disconnect the battery! Violation of the circuits can lead to errors in the control unit.

6. How much do thresholds cost: price comparison and where to buy

The cost of thresholds varies from 1,000 to 100,000 rubles depending on the material, brand and type. Below are the current prices for 2026:

Threshold type	Material	Price (per pair), ₽	Where to buy
Universal pads	Plastic/ABS	1 500 – 6 000	Wildberries, AliExpress, local stores
Steel (OEM)	Steel with zinc	8 000 – 30 000	Exist.ru, AvtoDok, official dealers
Aluminum	Aluminum 6061	15 000 – 50 000	Tuning-Shop.ru, CarID
Carbon fiber	Carbon	40 000 – 100 000	Seibon, Anderson Composites
Reinforced (off-road)	Steel 5 mm	20 000 – 60 000	4x4Shop, SUV shops

Where is the best place to buy:

• 🛒 For budget overlays — Wildberries or Ozon (frequent discounts up to 30%).
• 🔧 For OEM thresholds — Exist.ru or AutoDoc (guarantee of original parts).
• 🏆 For premium thresholds — official dealers or specialized stores (Tuning-Shop.ru).

⚠️ Attention: On AliExpress thresholds are often sold without certification. In 2023, there were cases when aluminum thresholds from China turned out to be painted plastic. Check reviews and request strength test videos!

7. TOP 5 brands of thresholds: rating by reliability and price

There are hundreds of manufacturers on the market, but only a few are trustworthy. We analyzed reviews from car owners and experts to create a rating:

1. Hecko (Germany) - the best universal pads.
   • 💰 Price: 2,500 – 7,000 ₽.
   • ✅ Pros: durable plastic, easy installation, 50+ models for different cars.
   • ❌ Cons: do not protect against corrosion.
2. SideStep (USA) — premium linings with anti-slip coating.
   • 💰 Price: 5,000 – 12,000 ₽.
   • ✅ Pros: rubber inserts, protection against chips.
   • ❌ Cons: more expensive than analogues.
3. Tuning-Sport (Russia) — aluminum thresholds for tuning.
   • 💰 Price: 12,000 – 25,000 ₽.
   • ✅ Pros: lightweight, stylish design.
   • ❌ Cons: not suitable for off-road use.
4. Seibon (Japan) — carbon fiber sills for sports cars.
   • 💰 Price: 40,000 – 100,000 ₽.
   • ✅ Pros: weight 60% less than steel, unique design.
   • ❌ Cons: fragile when impacted.

AvtoVAZ (Russia) — original thresholds for Lada.

• 💰 Price: 5,000 – 10,000 ₽.
• ✅ Pros: perfect fit, accessibility.
• ❌ Cons: require anticorrosive.

For off-road the best choice would be thresholds from ARB (Australia) or Ironman 4x4 — they can withstand loads of up to 200 kg and protect the body from stones.

8. Frequently asked questions about thresholds for cars

❓ Is it possible to install thresholds yourself without welding?

Yes, if these are applied thresholds with adhesive or bolts. To do this you will need a degreaser, glue (for example, 3M VHB) and a hairdryer for warming up. It is not recommended to install welded thresholds yourself; experience with a welding machine and anti-corrosion treatment are required.

❓ Which threshold material is the most durable?

Leading in durability aluminum — it does not rust and lasts 10+ years. However, steel thresholds with zinc coating and anticorrosive can last no less if properly cared for. Plastic linings are the least durable (2–3 years).

❓ Do I need to paint the thresholds after installation?

Yes, if these are steel or aluminum thresholds. The paint protects against corrosion and gives an aesthetic appearance. Plastic trims are usually not painted, but they can be coated vinyl film for added protection.

❓ How often should you check the condition of the thresholds?

It is recommended to inspect the thresholds every 6 months (spring and autumn). Pay special attention to:

• Welding seams (for rust).
• Fastening the linings (whether they peel off).
• Internal cavities (through drainage holes).

If rust is detected, treat problem areas immediately rust converter (for example, Tsinkar).

❓ Is it possible to drive without thresholds?

Technically it is possible, but this will lead to:

• Rapid spread of corrosion (the body rots in 2–3 years).
• Reduced body rigidity (handling deteriorates).
• Problems during maintenance (rust is considered a malfunction).

If the thresholds are damaged, it is better to install at least temporary overlays.