BMW 645 Wheel Size & Specs
BMW 645 Wheel Size2005 2004
Shop for Tire & Wheel Packages at Tire Rack.
|645 Bolt Pattern (Lug Pattern)||PCD 5x120
|Stock wheel offset||15 to 30 mm
|Center bore (hub bore)||72.6 mm
Use Hub Centric Rings
|Thread size (Lug Nut Size)||M12 x 1.5
|Stock Rim Sizes Range||19x8.0 – 22x9.5
|Custom rim sizes range||22x9.0 – 22x9.0|
|Tire sizes||Buy Tires on Amazon:|
BMW 645 wheel size chart serves as the fitment guide when you need to replace the OEM wheels or upgrade the vehicle with an aftermarket option. It helps figure out the possible stock and custom offset range, wheel width parameters, and the BMW 645 bolt pattern that is important for the correct fitment.
For your convenience, we have grouped the BMW 645 wheels specs by generation. Scroll down the page to find the necessary year of production and check out the wheel size.
Wheel fitment guide
When it comes to replacing stock wheels or rims of 645, every car owner has to deal with some fitment issues. You may run into this question each time you decide to change the wheel size or buy new rims because the stock ones made you feel bored.
Bolt pattern of your BMW 645
BMW 645 Pitch Circle Diameter (PCD) defines the diameter of the imaginary circle drawn by the centers of the wheel lugs and describes the number of the lug holes incorporated by the rim. How to change bolt pattern? Use Adapters
Stock Wheel Offset
What is the stock wheel offset? The space between the hub mounting surface and the wheel center of BMW 645 wheels. If you need a different offset use Wheel Spacers (Amazon link)
Generally, a good half of OEM wheels are correctly fitted only for certain cars, so be attentive! If you want to check out your BMW 645 offset, you have several options – look at the wheels` back, on their mounting plate, or on a rim spoke`s back. And in case you see the inscription that ends with “ET” you are in the right place. This BMW 645 wheel spec may be printed as both “number+letters” or vice versa.
Center Bore (Hub Bore)
The hole in the middle of a rim that exactly matches the hub diameter. It is located at the back of the wheel and as the car's hub goes into this hole it ensures the wheel gets centered correctly. Stock 645 wheels have a perfect centerbore fit with the hub. How to fit rims with a larger centre bore? Use Hub Centric Rings (Amazon link).
Custom Offset Range
It is calculated from the data of modified BMW 645 that switched to custom wheel size preserving the proper driving capabilities of the vehicle.
Lug Nuts size (Amazon link). Measures the thread diameter, the thread pitch, and the thread length. In the metric system, the diameter of the thread, the first digit, is described in millimeters.
Rim Sizes Range
Gives an idea about the maximum and minimum allowable limits of the diameter and width of the wheels matching the specific vehicle. Try Hubcaps (Amazon link) to change the look of your wheels.
Custom Rim Sizes Range
Shows the lower and upper limits of the rims the vehicle can incorporate in contrast to the manufacturer's specs. Sometimes it happens that you are not happy with your stock wheels and would like to have something else. Choosing the right aftermarket wheels (Amazon link) is not an easy thing to do, but we will try to help you get things straight. We have gathered the modified Ford BMW 645 cars, in which the owners tried to find the balance between wheel size, rims width, backspacing, wheels offset, and suspension height. It has to appeal to the car owner too. Have a look around and pick your option out of projects with custom wheels.
Scale from the minimum to the maximum available options of the wheel dimensions that may fit BMW 645.
Advantages and disadvantages of the different getting bigger or smaller wheels. Hopefully, this information will help you decide on the appropriate BMW 645 wheel size modification:
BMW 645 Bigger Wheels
- – Improve handling due to better grip and traction
- – Enhances car’s stability while cornering as more rubber is on track
- – The easiest way to increase the ground clearance of your 645
- – Comes with the added braking capability
- – Significantly improves and vehicle design with a more aggressive stance
- – Can comfortably handle greater speed as well as weight limits.
- – Bigger wheels mean bigger bills
- – Increased fuel consumption
- – Hard steering (turning)
- – A bit slower acceleration
- – Result in a rougher ride
- – Tend to wear out faster
- – Possible safety system warning
BMW 645 Smaller Wheels
- – Smoother ride without any major modifications
- – Relatively cheaper
- – Poor handling capability
- – Has a relatively ugly look
- – Weak performance due to their small sizes
We strongly recommend always using the wheel dimensions and bolt pattern that were stipulated by the manufacturer.
Remember that using aftermarket wheels will affect the fuel consumption rate of your BMW 645, and the speedometer measurements may not reflect the actual speed of your driving. This may even lead you to getting fined in some states.
BMW 645 FAQs
What year BMW 645 wheels are interchangeable?
Some wheels may be swapped should they have the same bolt pattern and the size of locking hubs. Otherwise, you need to make some modifications. And if you are eager to dive deeper into this subject, stay with us!
What other rims will fit a BMW 645?
Actually, it's not hard to determine whether the BMW 645 tires and rims are a perfect match. You have to look at wheel diameter and width for the ideal fitment. To make life easier, you can find stock rims size and wheels measurements on this page, manufacturer manuals, or the official BMW 645 website. Also, note that the width of the wheel could give you some flexibility, while the diameter is a bit more strict wheel measurement.
Does rim width matter for tires?
The BMW 645 rim width has a significant effect on the tire size you can put on, and if the tire is set on a narrow rim, it would be more narrow as well. So, the wheels size could also change during the fitment. However, the actual tire width may vary. A high-quality tire is able to get stretched up to 5 mm.
Will my car go faster with bigger wheels?
No, wheels with bigger diameters are heavier, and your car's acceleration efficiency may be slightly compromised. The BMW 645 wheels size may also enhance stability when cornering. The bigger wheels, the more stable your car would be, and for that reason, the braking distance will also shorten.
Do bigger rims affect gas mileage?
Yes, wheels with a wider width and bigger diameter inevitably increase the momentum. Thus, your BMW 645 is to consume more fuel because the engine will have to produce more torque. Moreover, unless the larger wheels are lightweight alloys, fuel economy will drop considerably because of upsizing.