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Related Manuals for BMW M4 GT4
Summary of Contents for BMW M4 GT4
- Page 1 BMW M4 GT4 USER MANUAL...
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Page 2: Table Of Contents
Table of Contents CLICK TO VIEW A SECTION GENERAL INFORMATION A Message From iRacing » Tech Specs » Introduction » Getting Started » Loading An iRacing Setup » Dash Pages » Dash Configuration (Page 1) » Pit Limiter » Shift Lights »... -
Page 3: A Message From Iracing
BMW’s customer sports car offering, the M4 GT4, didn’t take very long to make an impression on the world of racing at large. In its debut season of 2018, it was named “Race Car of the Year” at the Professional MotorSport World Expo Awards, and backed up the honor the next year with GT4 titles in Blancpain GT World Challenge Asia and the 24H SERIES, plus a Team title in ADAC GT4 Germany. -
Page 4: Tech Specs
BMW M4 GT4 | TECH SPECS CHASSIS FULLY ADJUSTABLE INDEPENDENT FRONT AND REAR SUSPENSION. W E T W E I G H T L E N G T H W I D T H W H E E L B A S E... -
Page 5: Introduction
BMW M4 GT4 // INTRODUCTION Introduction The information found in this guide is intended to provide a deeper understanding of the chassis setup adjustments available in the garage, so that you may use the garage to tune the chassis setup to your preference. -
Page 6: Loading An Iracing Setup
BMW M4 GT4 // INTRODUCTION LOADING AN iRACING SETUP Upon loading into a session, the car will automatically load the iRacing Baseline setup [baseline.sto]. If you would prefer one of iRacing’s pre-built setups that suit various conditions, you may load it by clicking Garage > iRacing Setups > and then selecting the setup to suit your needs. -
Page 7: Dash Pages
BMW M4 GT4 // DASH PAGES Dash Pages The dash display in this car is non-adjustable and features a single page to display critical vehicle information. DASH CONFIGURATION Left Light stack top Indicates if the left indicator is active in the real car... -
Page 8: Pit Limiter
BMW M4 GT4 // DASH PAGES Row 3 Second from right Battery voltage Row 3 Right Remaining fuel (Litres or US Gallons) Row 4 Left Current session lap number Row 4 Center Current engine rpm Row 4 Left Road speed (km/h or mph) -
Page 9: Shift Lights
BMW M4 GT4 // DASH PAGES SHIFT LIGHTS The shift lights illuminate from the outer edges inwardly and illuminate in the following order: 2 Green 6450 rpm 2 Green 6600 rpm 2 Yellow 6750 rpm 4 Yellow 6900 rpm All Flashing... -
Page 10: Advanced Setup Options
BMW M4 GT4 // ADVANCED SETUP OPTIONS Advanced Setup Options This section is aimed toward more advanced users who want to dive deeper into the different aspects of the vehicle’s setup. Making adjustments to the following parameters is not required and can lead to significant changes in the way a vehicle handles. -
Page 11: Tires
BMW M4 GT4 // TIRES & AERO Tires C OLD AIR PRES SU RE Air pressure in the tire when the car is loaded into the world. Higher pressures will reduce rolling drag and heat buildup, but will decrease grip. Lower pressures will increase rolling drag and heat buildup, but will increase grip. Higher speeds and loads require higher pressures, while lower speeds and loads will see better performance from lower pressures. - Page 12 BMW M4 GT4 // TIRES & AERO T IRE T EMPER AT URES Tire carcass temperatures, measured via Pyrometer, once the car has returned to the pits. Wheel Loads and the amount of work a tire is doing on-track are reflected in the tire’s temperature, and these values can be used to analyze the car’s handling balance.
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Page 13: Chassis
BMW M4 GT4 // CHASSIS Chassis FRONT ARB BL ADES Increasing the ARB setting shortens the ARB moment arm and will increase the roll stiffness of the front suspension, resulting in less body roll but increasing mechanical understeer. This can in some cases, lead to a more responsive steering feel for the driver. - Page 14 BMW M4 GT4 // CHASSIS CRO S S W EI GH T The percentage of total vehicle weight in the garage acting across the right front and left rear corners. 50.0% is generally optimal for non-oval tracks as this will produce symmetrical handling in both left and right hand corners providing all other chassis settings are symmetrical.
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Page 15: In-Car Dials
BMW M4 GT4 // CHASSIS IN-CAR DIALS BR AK E PRES SU RE B I A S Brake Bias is the percentage of braking force that is being sent to the front brakes. Values above 50% result in greater pressure in the front brake line relative to the rear brake line which will shift the brake balance forwards increasing the tendency to lock up the front tyres but potentially increasing overall stability in braking zones. -
Page 16: Left/Right Front
BMW M4 GT4 // CHASSIS LEFT/RIGHT FRONT C ORNER W EI GH T The weight underneath each tire under static conditions in the garage. Correct weight arrangement around the car is crucial for optimizing a car for a given track and conditions. Individual wheel weight adjustments and crossweight adjustments are made via the spring perch offset adjustments at each corner. - Page 17 BMW M4 GT4 // CHASSIS SPRING PERCH OFF S E T Used to adjust the ride height at this corner of the car by changing the installed position of the spring. Increasing the spring perch offset will result in lowering this corner of the car while reducing the spring perch offset will raise this corner of the car. These changes should be kept symmetrical across the axle (left to right) to ensure the same corner ride heights and no change in cross weight.
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Page 18: Left/Right Rear
BMW M4 GT4 // CHASSIS LEFT/RIGHT REAR RE AR RIDE HEI GH T Distance from ground to a reference point on the rear of the chassis. Increasing rear ride height will decrease rear downforce as well as increase overall downforce and will allow for more weight transfer across the rear axle when cornering. Conversely, reducing ride height will increase rear downforce percentage but reduce overall downforce while reducing the weight transfer across the rear axle. - Page 19 BMW M4 GT4 // CHASSIS REBOUND S T IFFNES S The rebound stiffness setting is a paired adjustment controlling both the low and high speed damping characteristics of the damper with identical ranges to those of the front dampers. Increasing rebound damping will slow down the rate at which the damper extends in both low and high speed situations.
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Page 20: Rear
BMW M4 GT4 // CHASSIS REAR FUE L LE V EL The amount of fuel in the fuel tank. Tank capacity is 104 L (27.5 g). Adjustable in 1 L (0.26 g) increments. ARB BL ADES Increasing the ARB assembly stiffness will increase the roll stiffness of the rear suspension, resulting in less body roll but increasing mechanical oversteer.