Tyre Replacement; Identification Of Tyre Spec. - Lotus TURBO ESPRIT Service Manual

Page
6
SEC T/ON TO D
15" T y r e Replacement
C a r s 1985 Model Year onwards: Goodyear ' N C T ' t y r e s of a new
s p e c i f i c a t i o n were i n t r o d u c e d on 1985 Model Y e a r E s p r i t S3 a n d
Turbo m o d e l s , t o g e t h e r w i t h a r e v i s e d f r o n t s u s p e n s i o n . For
1985
M.Y.
a n d l a t e r models it
i s
e s s e n t i a l t h a t
ONLY
e i t h e r
t h e new s p e c i f i c a t i o n Goodyear 'NCT' t y r e s o r Goodyear
' E a g l e NCT' t y r e s a r e f i t t e d . T h e s e two t y r e s d i f f e r i n name o n l y
a n d may b e s a f e l y mixed, b u t t y r e s made t o t h e p r e ' 8 5
s p e c i f i c a t i o n s h o u l d
-
n o t b e u s e d . F o r i d e n t i f i c a t i o n o f t y r e
s p e c i f i c a t i o n
see
below.
T y r e P r e s s u r e s
-
f r o n t 1 . 4 5 b a r (21 l b / i n 2 )
-
rear
1 . 7 0 b a r ( 2 5 l b / i n 2 )
-
s p a r e 2 . 0 5 b a r (30 l b / i n 2
)
C a r s P r i o r t o 1985 Model Year: I f t y r e s t o t h e p r e ' 8 5 s p e c i f i c a t i o n
a r e n o t a v a i l a b l e , t h e l a t e r t y p e Goodyear 'NCT' o r ' ~ a g 1 e NCT'
may b e u s e d b u t o n l y i n a x l e s e t s , and w i t h t h e t y r e p r e s s u r e s
o f o'nly t h e l a t e r s p e c . t y r e s i n c r e a s e d a s below.
'a
Tyre P r e s s u r e s -
P r e ' 8 5
M . Y .
c a r w i t h
P r e ' 8 5 spec. t v r e
f r o n t 1.45 b a r ( 2 1 l b / i n 2 )
r e a r
1.70 b a r ( 2 5 l b / i n 2 1
s p a r e 2.05 b a r (30 l b / i n 2
)
P r e ' 8 5 c a r w i t h
' 8 5 onwards s p e c . t y r e
f r o n t 1.60 b a r
( 2 3
l b / i n 2 )
rear 1.90 b a r ( 2 7 l b / i n 2 )
s p a r e
2
- 0 5 b a r (30 l b / i n 2
)
I d e n t i f i c a t i o n o f t y r e s p e c .
Embossed i n t h e s i d e w a l l of e a c h t y r e , on one s i d e o n l y ,
a r e t h e l e t t e r s D.O.T. f o l l o w e d by a s e r i e s of numbers and
l e t t e r s . T h i s f o r m a t i s t h e d a t e c o d i n g employed by t y r e
m a n u f a c t u r e r s t o i d e n t i f y t h e t i m e and p l a c e of b u i l d o f e a c h
t y r e .
Goodyear a l s o i n c l u d e a c o d i n g which i d e n t i f i e s t h e make
u p o f e a c h t y r e .
a
R e f e r e n c e need o n l y be made t o t h e l a s t t h r e e d i g i t s .
week Year
of o f
B u i l d B u i l d
Any t y r e m a n u f a c t u r e d on o r a f t e r week number 38 of y e a r
4 i s t o 1985 s p e c i f i c a t i o n .
Unused 1985 s p e c . t y r e s a l s o have i n t h e t r e a d a r e a 2
i d e n t i f y i n g c i r c u m f e r e n t i a l y e l l o w c o l o u r bands.
DEC 1986