Wheel Collider Acceleration WAY TOO SLOW

So I'm working on a top - down racing game (not drifting) which includes high speed cars and I'm using a very simple controller... However the acceleration is takes forever... My testing car is the Mclaren P1 GTR which can go from 0-60 mph in 2.4 seconds. But with unity it took over 40 seconds to reach 50 mph ...
Here is my controller script

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class CarController : MonoBehaviour
6. {
7.     public void GetInput()
8.     {
9.         m_horizontalInput = Input.GetAxis("Horizontal");
10.         m_verticalInput = Input.GetAxis("Vertical");
11.     }
12.  
13.     private void Steer()
14.     {
15.         m_steeringAngle = maxSteerAngle * m_horizontalInput;
16.         frontDriverW.steerAngle = m_steeringAngle;
17.         frontPassengerW.steerAngle = m_steeringAngle;
18.     }
19.  
20.     private void Accelerate()
21.     {
22.         frontDriverW.motorTorque = m_verticalInput * motorForce;
23.         frontPassengerW.motorTorque = m_verticalInput * motorForce;
24.     }
25.  
26.     private void UpdateWheelPoses()
27.     {
28.         UpdateWheelPose(frontDriverW, frontDriverT);
29.         UpdateWheelPose(frontPassengerW, frontPassengerT);
30.         UpdateWheelPose(rearDriverW, rearDriverT);
31.         UpdateWheelPose(rearPassengerW, rearPassengerT);
32.     }
33.  
34.     private void UpdateWheelPose(WheelCollider _collider, Transform _transform)
35.     {
36.         Vector3 _pos = _transform.position;
37.         Quaternion _quat = _transform.rotation;
38.  
39.         _collider.GetWorldPose(out _pos, out _quat);
40.  
41.         _transform.position = _pos;
42.         _transform.rotation = _quat;
43.     }
44.  
45.     private void FixedUpdate()
46.     {
47.         GetInput();
48.         Steer();
49.         Accelerate();
50.         UpdateWheelPoses();
51.     }
52.  
53.     private float m_horizontalInput;
54.     private float m_verticalInput;
55.     private float m_steeringAngle;
56.  
57.     public WheelCollider frontDriverW, frontPassengerW;
58.     public WheelCollider rearDriverW, rearPassengerW;
59.     public Transform frontDriverT, frontPassengerT;
60.     public Transform rearDriverT, rearPassengerT;
61.     public float maxSteerAngle = 30;
62.     public float motorForce = 50;
63. }

And my wheel collider setup...
https://imgur.com/a/VRAM6fG
Also I'm new to wheel colliders so like please go easy on me...

 

try this:

WheelMass: 80

Forward Friction: {2, 5, 5, 2, 1}
Sideways Friction: {0.4, 1, 0.5, 0.75, 1}

Also, add the substeps setting to your code:https://docs.unity3d.com/ScriptReference/WheelCollider.ConfigureVehicleSubsteps.html


Se não conseguir de nenhum jeito, você também pode utilizar o meu recurso gratuito:
https://assetstore.unity.com/packages/tools/physics/ms-vehicle-system-free-version-90214

 

Thanks mate, I'll be sure to check these out!!!

 

I have a very similar issue, did you get it working?

 

Well I did what Marcos-Schultz said... Regarding acceleration yes it was fixed but turning is not good at all.

 

Try to lower the center of the mass of the rigidbody of the car. It might be enought 0.1 mt.

 

thanks

 

Thank you for sharing these values with us it helped me to increase power car and also the wheels don't rotate too much .

 

Where do I put it in the script?

Code (CSharp):

1. using System;
2. using System.Collections;
3. using System.Collections.Generic;
4. using UnityEngine;
5.  
6. public class CarController : MonoBehaviour
7. {
8.     private float horizontalInput;
9.     private float verticalInput;
10.     private float steerAngle;
11.     private bool isBreaking;
12.  
13.     public WheelCollider frontLeftWheelCollider;
14.     public WheelCollider frontRightWheelCollider;
15.     public WheelCollider rearLeftWheelCollider;
16.     public WheelCollider rearRightWheelCollider;
17.     public Transform frontLeftWheelTransform;
18.     public Transform frontRightWheelTransform;
19.     public Transform rearLeftWheelTransform;
20.     public Transform rearRightWheelTransform;
21.  
22.     public float maxSteeringAngle = 30f;
23.     public float motorForce = 50f;
24.     public float brakeForce = 0f;
25.  
26.  
27.     private void FixedUpdate()
28.     {
29.         GetInput();
30.         HandleMotor();
31.         HandleSteering();
32.         UpdateWheels();
33.     }
34.  
35.     private void GetInput()
36.     {
37.         horizontalInput = Input.GetAxis("Horizontal");
38.         verticalInput = Input.GetAxis("Vertical");
39.         isBreaking = Input.GetKey(KeyCode.Space);
40.     }
41.  
42.     private void HandleSteering()
43.     {
44.         steerAngle = maxSteeringAngle * horizontalInput;
45.         frontLeftWheelCollider.steerAngle = steerAngle;
46.         frontRightWheelCollider.steerAngle = steerAngle;
47.     }
48.  
49.     private void HandleMotor()
50.     {
51.         frontLeftWheelCollider.motorTorque = verticalInput * motorForce;
52.         frontRightWheelCollider.motorTorque = verticalInput * motorForce;
53.  
54.         brakeForce = isBreaking ? 3000f : 0f;
55.         frontLeftWheelCollider.brakeTorque = brakeForce;
56.         frontRightWheelCollider.brakeTorque = brakeForce;
57.         rearLeftWheelCollider.brakeTorque = brakeForce;
58.         rearRightWheelCollider.brakeTorque = brakeForce;
59.     }
60.  
61.     private void UpdateWheels()
62.     {
63.         UpdateWheelPos(frontLeftWheelCollider, frontLeftWheelTransform);
64.         UpdateWheelPos(frontRightWheelCollider, frontRightWheelTransform);
65.         UpdateWheelPos(rearLeftWheelCollider, rearLeftWheelTransform);
66.         UpdateWheelPos(rearRightWheelCollider, rearRightWheelTransform);
67.     }
68.  
69.     private void UpdateWheelPos(WheelCollider wheelCollider, Transform trans)
70.     {
71.         Vector3 pos;
72.         Quaternion rot;
73.         wheelCollider.GetWorldPose(out pos, out rot);
74.         trans.rotation = rot;
75.         trans.position = pos;
76.     }
77.  
78. }

 

in you wheel collider settings

 

mine is moving slow even i changed every setting pls help

 

I doubt this is normal: my car can go up to and beyond Mach 1... but it also takes ages to get there. Would changing the physics material of the ground to have more friction help?

 

Not according to how I interpret the manual for Wheel Colliders. it states the following under Details:

"The Wheel Collider computes friction separately from the rest of physics engine, using a slip-based friction model. This allows for more realistic behaviour but also causes Wheel Colliders to ignore standard Physic Material settings."