suspension Seat Leon 5D 2011 Owner's manual

208Accessories, parts replacement and modifications
Accessories, parts replacement and modifications
Accessories and spare parts
Always consult an Authorised Service Centre before purchas-
ing accessories and parts.Your vehicle is designed to offer a high standard of active and passive safe-
ty.
Before purchasing accessories and parts, and before making technical
changes to your vehicle, we recommend you to consult your Authorised
Service Centre.
SEAT dealerships will be happy to provide you with the latest information
about the use, legal requirements and recommendations from the manufac-
turer regarding accessories and parts.
We recommend you use only SEAT Approved Accessories®
and SEAT Ap-
proved Spare Parts ®
. This way, SEAT can guarantee that the product in
question is suitable, reliable and safe. SEAT Authorised Service Centres
have the necessary experience and facilities to ensure that parts are correct-
ly and professionally installed.
Despite a continuous observation of the market, SEAT is not able to assess
the reliability, safety and suitability of those parts SEAT has not approved.
For this reason, SEAT cannot assume responsibility for any non-genuine
parts used, even if these parts have been approved by an official testing
agency or are covered by an official approval certificate.
Any equipment subsequently installed which has a direct effect on the driv-
er's control of the vehicle (e.g. cruise control system or electronically-con-
trolled suspension) must be approved by SEAT and bear the e mark (the Eu-
ropean Union's authorisation symbol). If any
additional electrical components are fitted which do not serve to con-
trol the vehicle itself (e.g. refrigerator box, laptop or ventilator fan), these
must bear the CE mark (European Union manufacturer conformity declara-
tion).
WARNING
Accessories, for example telephone holders or cup holders, should never
be fitted on the covers, or within the working range, of the airbags. Oth-
erwise, there is a danger of injury if the airbag is triggered in an accident.

Technical modifications
Modifications must always be carried out according to our
specifications.
Unauthorised modifications to the electronic components or software in the
vehicle may cause malfunctions. Due to the way the electronic components
are linked together in networks, other indirect systems may be affected by
the faults. This can seriously impair safety, lead to excessive wear of compo-
nents, and also invalidate your vehicle registration documents.
SEAT Authorised Service Centres cannot be held liable for any damage
caused by modifications and/or work incorrectly performed.
For this reason, we recommend having all work performed by a SEAT Author-
ised Technical Service using Genuine SEAT®
Spare Parts. 

236Wheels and tyres
Wear indicators
The original tyres on your vehicle have 1.6 mm high “tread wear indicators”
⇒ fig. 152, running across the tread. Depending on the make, there will be
6 to 8 of them evenly spaced around the tyre. Markings on the tyre sidewall
(for instance the letters “TWI” or other symbols) indicate the positions of
the tread wear indicators. The minimum tread depth required by law is
1.6 mm (measured in the tread grooves next to the tread wear indicators).
Worn tyres must be replaced. Different figures may apply in export countries
⇒ 
.
Tyre pressure
Incorrect tyre pressure causes premature wear and could cause tyre blow-
out. For this reason, the tyre pressure should be checked at least once per
month ⇒ page 233.
Driving style
Fast cornering, heavy acceleration and hard braking all increase tyre wear.
Changing wheels around
If the front tyres are worn considerably more than the rear ones it is advisa-
ble to change them around as shown ⇒ fig. 153. All the tyres will then last
for about the same time.
Wheel balance
The wheels on new vehicles are balanced. However, various factors encoun-
tered in normal driving can cause them to become unbalanced, which re-
sults in steering vibration.
Unbalanced wheels should be rebalanced, as they otherwise cause exces-
sive wear on steering, suspension and tyres. A wheel must also be reba-
lanced when a new tyre is fitted. Incorrect wheel alignment
Incorrect wheel alignment causes excessive tyre wear, impairing the safety
of the vehicle. If tyres show excessive wear, you should have the wheel
alignment checked by an Authorised Service Centre.
WARNING
There is a serious danger of accidents if a tyre bursts during driving!
● The tyres must be replaced at the latest when the tread wear indica-
tors are worn ⇒ page 236. Failure to do so could result in an accident.
Worn tyres do not grip well at high speeds on wet roads. There is also a
greater risk of aquaplaning.
● At continuously high speeds, a tyre with insufficient pressure flexes
more. This causes it to overheat. This can cause tread separation and tyre
blow-out. Risk of accident. Always observe the recommended tyre pres-
sures.
● If tyres show excessive wear, you should have the running gear
checked by an Authorised Service Centre.
● Keep chemicals such as oil, fuel and brake fluid away from tyres.
● Damaged wheels and tyres must be replaced immediately!
For the sake of the environment
Under-inflated tyres will increase fuel consumption. 