Retrofitting TPMS: Costs, Benefits & Installation 2025

Why retrofitting TPMS is more than just mandatory

Since November 2014, a tire pressure monitoring system (TPMS) has been mandatory for all new vehicles in the EU – but what about your existing vehicle? The good news: A retrofitted TPMS not only offers increased safety but also saves money. Studies show that just 0.5 bar of tire pressure underpressure increases fuel consumption by up to 31% and shortens tire life by 30%. In this article, you'll learn everything about the costs, benefits, and easy installation of a TPMS retrofit system for your car or SUV.

What is a TPMS and how does it work?

A tire pressure monitoring system continuously monitors your tires' air pressure and temperature in real time. Modern aftermarket systems like TireMoni work with external sensors that simply screw on instead of the valve caps, or with internal sensors mounted inside the tire. The system warns you immediately if pressure drops or the temperature rises – long before a dangerous situation arises.

The concrete benefits: What you really gain

Safety for you and your family
A sudden tire blowout at 130 km/h on the highway is one of the most dangerous situations on the road. TireMoni warns you in time so you can stop safely – especially important for family trips and vacations with a trailer.

Measurable cost savings
With an average annual mileage of 15,000 km and fuel consumption of 7 liters, you can save up to 32 liters of fuel per year by maintaining optimal tire pressure. At current gasoline prices of €1.70/liter, this equates to an annual savings of over €54. The system pays for itself in just two years.

Longer tire life
Consistently correct air pressure prevents one-sided wear and premature tire wear. For high-quality SUV tires (approx. €800 per set), TPMS can extend the service life by up to 201%—that's a saving of €160 per set.

Comfort in everyday life
Forget the monthly check at the gas station. The system continuously monitors all four tires plus the trailer and only alerts you when necessary – leaving you more time for the important things in life.

How much does a retrofit TPMS cost?

The investment in a retrofit TPMS is more manageable than many people think:

Entry-level systems: From 129,00€ for the TireMoni TM-150 with 4 sensors and display – ideal for cars without trailer operation

Mid-range systems: From 129,00€ for the TireMoni TM-100 (ADAC test winner) with extended functions and cigarette lighter connection

Smartphone systems: From 199,00€ for the STM-572 (4 sensors) – Your smartphone becomes a display, expandable up to 8 sensors

For comparison: A flat tire on the highway will cost you an average of €150 for towing plus labor – not to mention the safety risk.

Installation: Easier than you think

For external sensors (self-assembly in 3 steps):

1. Preparation: Insert batteries into the display, switch on the system, equip the sensors with batteries
2. Assembly: Screw on sensors instead of the valve caps (Note: For sensors that extend beyond the rim, we recommend shorter valves)
3. Attitude: Set warning thresholds according to manufacturer specifications – done!

Installation time: Under 10 minutes without tools

TPMS and trailers: The underestimated danger

Tire monitoring is especially critical when traveling with a caravan or horse trailer. Tire damage on a trailer often goes unnoticed until it's too late. TireMoni systems can easily be upgraded with trailer sensors and continuously monitor all wheels – for true safety on long journeys.

Retrofitting TPMS is worthwhile in many ways

A retrofitted tire pressure monitoring system is one of the most sensible investments for your vehicle. It demonstrably improves safety, saves measurable fuel and tire costs, and increases everyday comfort. With systems starting at €99 and self-installation in under 10 minutes, there's hardly any reason to forgo this technology.

Since 2005 TireMoni develops and produces high-quality TPMS solutions in Switzerland that are characterized by reliability and ease of use. Over 100,000 satisfied customers in Europe already trust in proven Swiss quality.

Ready for more security and lower costs? Find your suitable TireMoni system now or get free advice: +49 (9099) 966 4966