Welcome to ZRoadster.org - BMW Z1 Z4 Z8 Z3 Forum and Technical Database
If you want to join in with the discussion, and see the areas which are available only to members then sign up now!Sign up for your free account!
Select a Category
Article Author GazHyde Views 19328
BMW Z3 General Information for Potential Buyers by Mike Fishwick
Article reproduced with the kind permission of Mike Fishwick A BMW Z3 Buyers Guide. This article gives out general information on what to look for when choosing your BMW Z3.
Article Author GazHyde Views 19059
How to fix your BMW Z3 Rocking Seats (changing the bushes/bushings)
How to fix your BMW Z3 Rocking Seats. It’s a common problem that all BMW Z3 owners will suffer from at some stage as our cars get older. The standard seat bushes wear out, and this article details how to change yours for a set of Aceman's World Famous BMW Seat Bushes!
Article Author GazHyde Views 14606
Basic BMW Z3 Suspension Modifications by Mike Fishwick
Back in the days when cars had a separate chassis it was not unusual for the driver to see that the radiator and bonnet were moving relative to the scuttle – the front of the body’s rigid area, on which the windscreen was mounted – as the chassis flexed. This phenomenon was known as ‘Scuttle Shake,’ and largely passed away with the advent of monocoque body structures.
Article Author GazHyde Views 14344
BMW Z3 Rear screen replacement
Well after splitting the plastic rear screen on my BMW Z3 I was left with no alternative but to seek out a replacement. An OEM screen is now in excess of £200 so I started a search for a good quality aftermarket one.
Article Author GazHyde Views 13525
BMW Z3 Seat Belt Guides (adding or changing)
How to fix issues with your BMW Z3 seat belt guides. It’s unfortunately common for the BMW Z3 seat belt guides to snap or break if you are not careful. It’s also quite common for roadster owners to retro fit the M Coupe seats as they are arguably more comfortable (and heated). However the Z3 Coupe seats don’t have a seat belt guide attached to the seat, as this was fixed to the B pillar in the car.
Article Author GazHyde Views 12275
BMW Z3 Hard Top Fitting (1996 to 2002)
I fitted my fitting kit and hardtop a while ago now – but it wasn’t really perfect (I was about 95% happy with it).. It was weather tight – but I was getting a slight clunk from the rear when going over bad roads/potholes etc and a very slight wind noise. I always said I’d get round to sorting it out once and for all once time and weather permitted! and low and behold it was actually sunny here today for a change!!
Article Author GazHyde Views 12242
BMW Z3 Club UK at ZRoadster.org
As it stands there is currently no dedicated BMW Z3 Club in the UK. There are plenty of useful resources out on the internet, and top of that list is the ZRoadster.org BMW Z3 Forum which has been running since December 2011. We like to think of ourselves as a BMW Z3 Club, as we do all the things that a car club does.
Article Author GazHyde Views 10736
BMW Z3 Sill Removal and Protection
BMW Z3 Sills are prone to rusting from the inside outwards, so this article shows you how to remove them and protect the bare metal on the insides.
Article Author GazHyde Views 10732
BMW Z3 Subtly Stiffening a Z3 by Mike Fishwick
The Z3 must be the most-maligned sports car ever built, most of the motoring press and television presenters pouring scorn on it, particularly for its use of ‘old fashioned’ semi-trailing arm rear suspension from the E36 Compact. The same people, of course, are full of hysterical praise for the E30 M3, which has the same suspension, but which is set up for a more specialised task.
Article Author GazHyde Views 10362
BMW Z3 Radio Head Unit Removal and Replacement
In this case I am replacing the standard low quality BMW Z3 OEM Business RDS head unit for a Sony MEX BT3800U head unit. This new unit provides better sound quality, and a host of extra features such as – Bluetooth Audio and Hands Free Phone, USB Socket, Auxiliary Line In socket and so on.
Article Author GazHyde Views 10250
Choosing Engine Oil by Mike Fishwick
Many new owners seek advice about which oil to use for their BMW, and the best advice is to be found in the Owner’s Handbook, which has a couple of pages regarding engine oil – but it is unfortunately commonplace for previous owners to retain the handbook.
Article Author GazHyde Views 8911
BMW Z3 Mirror Base Refurbishment
This guide is mainly for those BMW Z3 owners among us whose mirrors are so badly corroded they cant be twisted to access the bolts. Theres no extra work per se but the removal process is somewhat backwards
Article Author GazHyde Views 8374
BMW Z3 Hood Micro Switch Replacement
Problems with the electric roof on my BMW Z3 and I identified the problem to be a faulty microswitch, I decided I would finally cure the problem and replace the switch. It is a fairly simple job but does require a little modification from the old switch to the new switch.
Article Author GazHyde Views 8196
BMW Oil and Filter Changes by Mike Fishwick
Many owners are terrified of losing that string of BMW Dealer stamps in their service book, believing that such expenditure may gain a better trade-in value or an easier private sale. Although this has a logic in terms of fairly new cars, an investment of maybe several thousand pounds will never be redeemed on a long-term car deemed by the trade to be virtually ‘worthless.’
Article Author GazHyde Views 7994
BMW Z3 Rear Bumper Removal Procedure
How to remove the rear bumper on your BMW Z3. In this case the paint along the surface at the side of the bumper where it meets the wing on my car was flaking away, probably due to a respray at some time in the past. Anyway, wanted to try and rectify this before the flaking reached the main external surface of the bumper.
Article Author GazHyde Views 7623
Transmission Oil Changes by Mike Fishwick
The older BMW gearboxes were filled with either normal 75-80 EP gear oil or automatic transmission fluid, this being denoted by the use of either a brown or orange label near the filler plug, and owners of such cars therefore accept the need to change the oil from time to time. Many have found that the use of a more modern synthetic lubricant improves their gear change action, but if following this route, first find if your gearbox requires the use of GL3/GL4 oil only, or the modern GL5 standar
Article Author GazHyde Views 7572
Battery Maintenance and Problems by Mike Fishwick
Even those who keep their cars in top condition often ignore their battery until it dies. This failure is usually regarded with surprise, and accepted as being ‘One of those things,’ but at £60 to £80 a time it is an expensive folly.
Article Author GazHyde Views 7570
BMW Z3 Replacing Heater Control Bulbs
As is the case with most of the BMW Z3, the heater controls are ‘borrowed’ from the E36 series, but in their new home there is far less space behind them than in the original application. This, coupled with the tight fit of the bulbs in their mountings, makes replacement less than easy.
Article Author GazHyde Views 7249
BMW Z3 Resetting the Service Indicator by Mike Fishwick
The Service Indicator system operates the SI lights, which lose one of five green lights at a time, in response to the amount of fuel used – hard driving and/or cold running uses more fuel – changing to orange (Service due) and red (Service NOW!). The system also operates a two-year timer, which illuminates a clock symbol indicating that the coolant and brake fluid should be replaced.
Article Author GazHyde Views 7141
Fitting Sonar Halo BMW Z3 Angel Eyes Headlight Units
Article written by 'Zedonist'. Detailed instructions on how to change your standard BMW Z3 headlights for Angel Eye versions. These particular angel eyes are made by Sonar
Article Author GazHyde Views 6877
BMW Z3 A better air intake by Mike Fishwick
I have a feeling that the original design of the Z3 air intake system was dictated more by the space available, rather than engineering considerations. For example, the air filter is smaller than even that of the 8-valve Volkswagen Golf GTI, which is known to be obstructive on even a 1.8 litre engine. In 16-valve form the Golf filter is enlarged to almost double the size of that used on the 2.8 or 3 litre Z3 and the 3.2 litre M Roadster.
Article Author GazHyde Views 6451
BMW Z3 Fitting a Smaller Steering Wheel by Mike Fishwick
I have always found that manufacturers tend to fit their sportier models with steering wheels which are larger than necessary, apparently believing that customers are all would-be truck drivers, and BMW is no exception. Worse still, the M-Technic wheel fitted to my Z3 had a hard rim of a peculiar shape, with hard pieces of plastic designed to cut into one’s thumbs. After two hundred miles my fingers were sore, and a four hundred mile day left my hands in pain; a replacement was necessary – but
Article Author GazHyde Views 6289
BMW Z3 M52TU Thermostat Replacement by Mike Fishwick
When the M52TU double-VANOS versions of the established M52 engine were introduced in September 1998, it featured a cooling system thermostat which was electrically controlled. These thermostats are now widely used, as they enable the engine management system to maintain coolant temperature within very close limits.
Article Author GazHyde Views 6003
BMW Z3 History by Mike Fishwick
This article is to give a basic BMW Z3 history. The overnight success of the Mazda MX-5 throughout the USA was probably the deciding factor in BMW’s decision to produce a small sports car. It was decided that as the majority of sales would take place in the USA, the car would be built by the new BMW factory at Spartanburg, South Carolina.
Article Author jonco Views 5993
3G EWS remote fob programming
[B][U]Subject: 3G EWS remote fob programming Background[/U][/B] I have a ’98 1.9 Z3 with the old style `house-brick’ remote and had problems with it not operating. I sought help on the zroadster forums and as is usual, there were lots of useful comments and links to previous...Discuss Article