Welcome to the online home of TT TOOLS LTD.

The company is highly skilled in machining alloy wheels and accessories, based in Chelmsford.




Here are just some of the services we can provide:

Blank Alloy wheels Custom drilled, any PCD

Wheels re-pitched (e.g. 5/112 to 5/114)

Offset (ET) of wheels, Increased or reduced

Center Bore diameters can be changed

Rings/Spigot Rings machined to spec

Conversion Hubs machined to spec

Wheels Machined, de-burred, Cleaned and re-boxed

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Alloy Wheel Diamond Cutting Service

Prices From: £75
Our specialist CNC Engineers operate highly advanced Haas CNC Diamond Cutting lathes that create a Factory polished finish to alloy wheels. We have the capacity to refurbish approximately 40 wheels per day.



The Process

Remove tyres – Tyres are removed on our tyre machine.

Cleaned and keyed  – Wheels are cleaned on an Aqua blasting machine, this is a wet blasting process of high pressure water, Unlike shot blasting this process is non aggressive. This process gets rid of all the dirt, grit and tar on the wheel and removes any old lacquer and prepares them for the rest of the process.

Probe – The wheel is then placed on our in house Haas CNC lathe, where it is probed by a qualified CNC engineer. The wheel is then programmed and ready to be cut.

Cutting – The alloy wheel is secured and spun while a diamond cutter removes the face of the alloy. We only take a tiny amount off the surface of the entire Wheel, thus removing the old Lacquer and leaving a brand New shiny finish to factory standards.

Lacquered – Finally the wheels are lacquered, placed in our state of the art oven and cured to protect the wheels against everyday wear and tear.

All Diamond Cutting work is GUARANTEED for 12 months.

*All services and price are subject to survey

*All prices subject to VAT

Blank Alloy Wheels Custom Drilled, any PCD

We use CNC (Computer Numerical Controlled) machines to Custom Drilled alloy wheels to any PCD

  • any size wheels are possible 15″ to 24″+
  • We are capable of machining over 100+ wheels per day

Quick turn-round  


Center Bore Diameters

The centerbore of a wheel is the size of the machined hole on the back of the wheel that centers the wheel properly on the hub of the car.

The wheel would first be precisely positioned, and then machined to the exact size required.



Five to Four

We have a process that allows us to machine a five hole PCD to a four or four to five etc….

We do this without the use of welding, which would normal distort a wheel.

This only works in some cases, mostly when a wheel has a cap, which covers the PCD Holes.

This process also eliminates the use of PCD ADAPTERS.


Offset (ET) of Wheels, Increased or Reduced

The Wheel offset is taken from the wheels centre line and measured to the mounting face of the alloy wheel.

There are two main offsets Positive and negative, We can create both, either Increasing or reducing the offset using our CNC Machines.

Using our CNC machines we can Skim 5mm off most pre-drilled wheels, (ie. ET35 to ET40).

Blank wheels can be machined to almost any offset.


Re-pitching Wheels

Using our CNC machines we can change the spec of  most pre-drilled wheels, with or without a cap covering the holes.

The PRE-DRILLED wheel would first be precisely positioned, and then the first hole of the PCD would be located. Then machined to the exact size required.

MOST COMMON RE-PITCH IS  – 5/112 TO 5/114.3

But any PCD Fitment is possible if the wheels have the same amount of holes within the pcd. 5/100 TO 5/98, 4/108 TO 4/114.3 ETC……….


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Contact details

29 Drapers Road, South Woodham Ferrers, Chelmsford, Essex, CM3 5UH


01245 325868

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