Installing spacer 25mm is a good idea to improve the wheel style and performance. By pushing the wheels out from the hub assembly, wheel spacers allow you to install wider, more aggressive tires that can better grip loose or uneven terrain. However, many owners still wonder: Are 25mm spacers safe for driving?
Let’s answer first. Yes, as long as you install them properly, high-quality spacers 25mm are safe and reliable. Consequently, get proper wheel spacers installed, and you’ll be fine when driving on or off-roading. In this blog, we will delve into the top 5 factors of selecting good 1-inch spacers to help you make a wise decision.

Top 5 Factors of Good Wheel Spacer 25mm
1. Quality Material
High-quality 25mm wheel spacers are typically crafted from durable materials like forged 7075-T6 aluminum alloys. These materials offer superior strength and resistance to the harsh conditions encountered during passionate driving, such as impacts, vibrations, and extreme temperatures.
2. Precise Fitment
Precise hub-centric spacer 25mm provides high surface integrity, effectively guarantee stability and reliability. This ensures the wheel is properly centered on the spacer, reducing vibrations and preventing potential safety issues.
3. Brand Reputation
Brand companies focus on quality and reputation. Years of research and development make their flagship products safer and more reliable. You can always trust reputable brands.
4. SGS TÜV Certification
The SGS and TÜV offer a comprehensive range of specialist safety and quality tests. The best 25mm wheel spacers should come with proper SGS TÜV performance test reports.
5. Product Warranty
Most genuine brand 1-inch wheel spacers usually come with a warranty. The longer the warranty, the better.

Who Sells the Best Wheel Spacer 25mm?
Safety, precision, strength, and experience are what makes BONOSS the best spacer manufacturer. For anyone seriously considering the performance potential of their cars, heat dissipation is something that should not be overlooked. BONOSS offers several key advantages that make their spacers a top choice.
1. Active Cooling for Better Experience
BONOSS forged active cooling wheel spacer 25mm comes with heat dissipation grooves. When rotating, these grooves allow the air to flow between the spacers and brake rotors. The air takes away the heat to actively dissipate heat for the braking system. These BONOSS forged active cooling car spacers boost the cooling efficiency, reduce brake thermal decay, and improve road safety.
2. Forged Aluminum for Improved Durability
All BONOSS forged active cooling 25mm wheel spacers are made of top-quality 6061-T6/ 7075-T6 aluminum alloy. The tensile strength is up to 572 MPa, and the yield strength is up to 503 MPa (AL7075-T6). The forging process eliminates the porosity, ensuring structural integrity. This makes them not easy to break. With an advanced manufacturing process, BONOSS can offer all cars the perfect wheel spacers without any quality compromise.
3. Strong Fasteners for Enhanced Stability
When it comes to safe wheel spacer 25mm, wheel lugs are important. The provided BONOSS wheel studs are made of high-strength forged SCM440 alloy steel. These wheel studs are approved by over 75 SGS TÜV authoritative certification reports:
- Tensile strength≥1,220 MPa;
- Limited life range test≥2,000,000 stress cycles without damage;
- Ultimate tensile load≥152,000 N;
- Hardness (HV)≥395;
- Neutral Salt Spray≥500H.
Frequently Asked FAQ
Q: Are 1-inch wheel spacers safe?
A: As long as you use quality hub-centric set, 1-inch wheel spacers are safe at high speeds. Make sure they are properly installed by knowledgeable mechanics.
Q: Do I need wheel spacer 25mm on all 4 tires?
A: If you want to keep the same front and rear wheel style, you need to install 25mm wheel spacers for all 4 tires.
In Summary: Safely Boost Your Car’s Performance with BONOSS
With BONOSS’s innovative active cooling technology, superior forged materials, and certified quality, BONOSS forged active cooling wheel spacer 25mm kit undoubtedly the best choice for your wheel style upgrading project. Choose BONOSS and experience the difference—engineered for those who demand the best.
(Hi, I’m Kevin Brian, a 30-year mechanical engineer. For a better user experience, this article is original content uploaded by humans. It is not generated by Artificial Intelligence (AI) Models or tools.)



