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Size of Tire ........................................ 245/40ZR18
97Y Tread Radius (Inflated), In. .............
50.00/20.00/14.00Make & Description
....................................... DUNLOP Tread Arc Width
(Inflated), In. ............................... 8.20 SP Sport Maxx
TT Radial Non-Skid Depth, In.
............................................... 0.33Serial Number
......................... DOT DM2P JA1R2310 Tread Thickness, In.
............................................. 0.38No. of Plies/Load
Range............................... 2+2+2 XL Total Crown
Thickness, In. ................................... 0.65Tire Weight
.................................................. 25.80 Lbs. Total
Shoulder Thickness, In. ............................... 0.56Rim
& Inflation ....................................... 18x8.5 26
PSI Shoulder Tread Rubber Thickness, In. .................
0.26Cross Section (Inflated), In.
.................................. 9.86 Cushion, In.
...........................................................
9.60Overall Diameter (Inflated), In. ............................
25.66 Air Volume, Cu. In.
............................................... 1910Outside
Perimeter -Heel to Heel, In. ................... 16.22 Material
Volume, Cu. In. ......................................... 541Inside
Perimeter -Toe to Toe, In. ........................ 15.38 Inside
Bead Circ., In. -Heel ................................. 57.18Toe to
Heel, In. ......................................................
0.51 Inside Bead Diam., In. -Heel ...............................
18.20 Size Factor, In.
.................................................... 35.52
CARCASS CORD DATA (Rayon) Ply 1 Ply 2 Avg Plies(1-2)Cord
Construction ................................ (1100)/2 (1100)/2
Cord Tensile-Conditioned, Lb. ............. 21.1 20.0 20.6Cord
Tensile-Bone Dry, Lb. ................. 22.8 22.8 22.8LASE @ 3%
Conditioned, Lb. .............. 7.6 7.6 7.6LASE @ 3% Bone Dry, Lb.
................. 12.1 10.3 11.2Elong. @ Break-Conditioned, %
......... 13.0 12.3 12.7Elong. @ Break-Bone Dry, % ..............
8.6 9.4 9.0Cable Twist, Turns per Inch ................. 13.0 13.0
13.0Direction of Twist .................................. z/s z/s
Cord Gauge, In. .................................... 0.022 0.022
0.022Cords/Inch-Crown-Normal ................... 22.0 22.0
22.0Cords/Inch-Crown-Circum. .................. 21.9 22.0 22.0Cord
Angle-Crown, Deg. ..................... 85.0 88.0 86.5Picks per
Inch ....................................... 2.0 2.0 2.0Ply Lay
.................................................. Right ----
Ply Gauge @ Crown: Bottom of Ply 1 to Top of Ply 2 ........
0.024 In.Including Belts
Total Carcass Strength/Inch-Normal ..... 1003 Lb. : Cond. 906
Lb. 9117 Lb. : Cond. 9001 Lb.Total Carcass Strength/Inch-Circum.
.... 1003 Lb. : Cond. 906 Lb. 3624 Lb. : Cond. 3527 Lb.
SIDEWALL INSERT Position 1Material
.......................................... Aramid CordCord
Construction .......................... (1500)/2Cable Twist, Turns
per Inch ........... 10.0Direction of Twist
........................... z/sCord Gauge, In.
............................. 0.024Picks per Inch
................................ 0.0Cords/Inch (Count)
........................ 20.0Cord Angle, Deg.
........................... 40.0Width, In.
........................................ 1.40Position 1 - Located
between bead filler and rubber chafer.
TIRE SPECIFICATION NO. 1423-ITSP REIFENWERKE
Hanau am MainSMITHERS RAPRA, INC.
GERMANY
September 15, 2010Copyright 2010 by Smithers Rapra, Inc.All
rights reserved.
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BELT DATA Position 1 Position 2 Position 3 Position 4Material
.......................................... Wire Wire Nylon Yarn
Nylon YarnCord Construction .......................... 2+2x0.25mm
(1260)/1 (1260)/1Tensile, Lb. ....................................
126 ---- ----O.D. (without wrap) ........................ 0.78mm
---- ----Cable Construction ........................ 2+2x0.25mm
---- ---- Lay ....................................... 0.80 Left*
---- ----Total Wires ..................................... 4 ----
----Cord Tensile -Conditioned, Lb. ...... ---- ---- 25.3 Cord
Tensile -Bone Dry, Lb. .......... ---- ---- 25.6 Cord Gauge, In.
............................. ---- ---- 0.016 0.016Picks per Inch
................................ 0.0 0.0 2.0
2.0Cords/Inch-Crown-Normal ............. 26.0 26.0 30.5
30.5Cords/Inch-Crown-Circum. ............ 10.6 10.2 0.0 0.0Cord
Angle-Crown, Deg. ................ 24.0 23.0 0.0 0.0Belt Lay
.......................................... Right Left Circum
CircumBelt Width, In. ................................ 8.51 8.22
9.12 9.12*The lay value shown applies to the outer two strands of
twisted wire. The inner two strands are untwisted.Belts 3 and 4 are
apparently made up of continuously-wound groups of 17 nylon yarns
that overlap one another.Width shown for Belts 3 and 4 represents
the measurement from the furthest points at each end of the belt
package.
FLIPPER: None
CHAFER Position 1Material
.......................................... RubberWidth, In.
........................................ 3.30
SQUEEGEE: NoneBEAD: 6 turns 5 strands of 0.035 in. diameter
wire. Semi-hard rubber insulation and bead
filler. No fabric cover. Tensile - 327 Lb.
VISCOELASTIC TREAD RUBBER PROPERTIES(Temperature -30 to 60,
Strain Amplitude 0.25%, Frequency 10Hz, Ramp Rate 2C/min.)
Temperature(C)-2502560
E'Elastic
Modulus(MPa)
1522.694.631.6217.39
E''ViscousModulus
(MPa)391.4555.4210.954.43
Tan dTangent
Delta --
0.260.590.350.25
E*ComplexModulus
(MPa)572.1109.6433.4617.95
D''Loss
Compliance(MPa-1)0.00020.00460.00980.0137
Spec. No. 1423-ITSheet #2
September 15, 2010Copyright 2010 by Smithers Rapra, Inc.All
rights reserved.
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ROOM TEMPERATURE 100 Deg. C.ADHESIONS AVG. MAX. AVG.
MAX.Sidewall & Carcass, PPI ......................... 53 84 45
63 Belt 1 & Carcass, PPI ............................. 42 51 22
30 Belt 1 & Belt 2, PPI ................................. 70 83
58 71 Tread & Belt 4, PPI ................................. 76
108 48 64
BLACK PHYSICAL PROPERTIES TREAD SW LINERHardness
................................................ 67 53 59 Stress @
100% Elong., PSI ................... 520 220 390 Stress @ 200%
Elong., PSI ................... 1240 530 850 Stress @ 300% Elong.,
PSI ................... 2030 1030 1450 Stress @ 400% Elong., PSI
................... 2710 1610 2140 Stress @ 500% Elong., PSI
................... ---- 2240 ----Stress @ Break, PSI
.............................. 3070 2760 2160 Elongation @ Break, %
.......................... 460 580 410
SHLD RBR BEADSUBTRD CHAF FILLER
Hardness ................................................ 70 69
83
BLACK BELT SUB- BEADCHEMICAL ANALYSIS TREAD SW LINER COMPD TREAD
FILLERSpecific Gravity ............................... 1.235 1.130
1.165 1.209 1.187 1.190Plasticizer, %
.................................. 10.56 5.89 5.73 6.83 9.25
5.74Ash, % ............................................ 31.31 2.31
4.89 6.61 5.60 3.09Insol in HCl, % ................................
29.22 0.06 0.23 0.14 3.52 0.04Carbon Black, %
............................. 9.22 29.22 30.60 32.76 33.60
36.69Total Sulfur, % ................................ 1.26 1.43
1.57 3.13 1.69 2.36Zinc Oxide, % .................................
0.80 1.72 3.78 5.31 1.34 2.39Calcium Carbonate, %
.................... 0.80 0.05 0.02 0.07 0.05 0.05Titanium Dioxide,
% ........................ ---- ---- ---- ---- ---- ----Silicon
Dioxide, % ........................... 28.92 ---- ---- ---- 3.43
----Rubber Polymer By Weight, % ....... 49.83 60.95 58.72 53.68
51.30 53.93Insol in H2SO4, % .......................... ---- ----
---- ---- ---- ----Magnesium Oxide, % ..................... ----
---- 0.06 ---- ---- ----Cobalt, %
........................................ ---- ---- ---- 0.05 ----
----Polymer, % ...................................... 20NR 40NR NR
100NR 100SBR 100NR
80SBR 60BR SBRCIIR
RBR SHLDCHAF BTRS
Specific Gravity ...................................... 1.179
1.121
Spec. No. 1423-ITSheet #3
September 15, 2010Copyright 2010 by Smithers Rapra, Inc.All
rights reserved.
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STICKER: NONEREMARKS: Tread is superimposed on subtread. Tread
and black sidewall are of different stock.
Subtread and black sidewall apparently of different stock.
Subtread and tread apparentlyof different stock. Liner stock
apparently extends from 0.20 in. above heel on one side to0.20 in.
above heel on other side and is approx. 0.020 in. in thickness at
crown. Minimuminner liner gauge is 0.020 in. at center and
shoulder. Liner splice is on an approx. 89deg. angle. Tread has a
total of 31 pitches. Tread mold is divided into 9 radial segments.
Gum layer under ply 1 is approx. 0.025 in. in thickness at crown
and apparently extendsfrom 0.60 in. above heel on one side to 0.60
in. above heel on other side. Venting: Inside of tire has angular
vents spaced approx. 0.20 in. apart at bead. Vents crisscrossto
form an "X" pattern on both sides of the tire, are approx. 7.50 in.
and approx. 6.40in. long, approx 0.05 in. wide, approx. 0.01 in.
raised and are part of a molded ventpattern (see section). Outlined
raised black letters: approx. 0.45 in. in height,approx. 0.02 in.
raised and approx. 0.02 in. outlined. Treadwear indicators are
markedwith 6 triangles around the shoulder of the tire.
PITCH SEQUENCE MEASUREMENT Code Identification - 1= Smallest
9= Largest( ) = Radial Segment within PitchTotal of 31 pitches.
(See tread footprint for point of measurement)
(2)596(4)663(2)578(4)113(7)7(5)27(6)462(5)6(8)842TIRE FOOTPRINT
DATALoad on Tire, Lb. ................................. 1365 @ 30
PSI 1365 @ 35 PSITotal Footprint Area, Sq. In. ................
44.03 39.76Net Contact Area, Sq. In. .................... 29.26
25.77Loaded Radius, In. .............................. 11.81
11.91Tread Width from Footprint, In. ........... 8.29 8.18Loaded
Deflection, In. ......................... 1.02 0.92Loaded Section
Width, In. ................... 10.39 10.31
TIRE PLUNGER DATA 3/4 In. Plunger, 2 In./Min. @ 26 PSIAvg.
Force, Lb. .................. 1696Avg. Penetration, In.
............ 4.11Avg. Energy, In.-Lb. ............. 3485
5 Bottom
INDIVIDUAL BREAKS (DOT 139 Procedure)PENETRATION (In.) LOAD
(Lb.) PLUNGER ENERGY (In.-Lb.)
4.09 1727 3532 Bottom4.10 1712 3510 Bottom4.10 1688 3460
Bottom4.13 1673 3455 Bottom4.11 1678 3448 Bottom
Minimum DOT 139 Plunger Energy - 2600 In.-Lb.
Sheet #4Spec. No. 1423-IT
September 15, 2010Copyright 2010 by Smithers Rapra, Inc.All
rights reserved.
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1004454 9/29/1074 654245/40ZR18 Dunlop SP Sport Maxx TT18X8.5 K.
Downs730kg / 340 kPa 11.7097Y 2010-3 European Tire Analysis
ReportDM2P JA1R 2310 1423-ITTire Service 1004454
SRC RR (Newtons) = 55.1730 RR Coefficient = 10.99340
alpha () -0.2891beta () 0.9832
a 0.0540b 1.4942E-04c -4.0908E-07 SMERF RR (Newtons) = 52.6
RR Coefficient = 10.49
501126080
SRC Load (Newtons) SMERF RR = 0.55(SMERF EPA Urban) + 0.45(SMERF
EPA Highway)SRC Inflation (kPa): where SMERF EPA cycles are
calculated by integratingSRC Speed (kph): RR = PL (a + bV + cV2)
over the EPA cycles
SMERF RR calculated according to
Base Inflation Pressure (kPa):SRC RR calculated according to RR
= PL (a + bV + cV2)
at Standard Reference Condition.
Standard Reference Condition (SRC)
Coefficients (Newtons/kPa/kph)
Test Order:Max Load/Max Inflation Weight (kg):
Order Number:
Load and Inflation for Test MatricesMax Tire Load (kg):
Manufacturer/Type:Shore: Tire O.D.(mm):
Rim SizeTire Size:
Customer:
Requested By:
DOT number: Tnumber:Load Index/Speed Symbol:
www.smithersscientific.com
SAE J2452 Rolling Resistance ReportDate:SSS Tire ID:
Smithers Scientific Services, Inc.1150 North Freedom Street
Ravenna, Ohio 44226Tel:330-297-1495 Fax:330-297-0038
80
RR Coefficient =
Inflation Rolling Inflation RollingPressure Load Speed
Resistance Pressure Load Speed Resistance
Condition (kPa) (Newtons) (kph) (Newtons) Condition (kPa)
(Newtons) (kph) (Newtons)1 351 2148 116.0 23.3 16 403 6440 37.8
58.32 351 2148 84.6 22.2 17 403 6437 23.0 56.43 352 2148 58.5 22.4
18 402 6443 13.7 54.94 352 2147 38.4 20.6 19 299 6440 115.3 71.25
351 2146 23.5 19.3 20 301 6441 84.0 67.36 351 2150 14.0 19.1 21 300
6441 57.9 65.57 299 4296 115.6 46.5 22 300 6440 37.8 63.68 301 4297
84.2 45.3 23 301 6439 23.0 61.19 301 4297 58.3 44.0 24 300 6443
13.6 59.8
10 301 4296 38.1 42.5 2511 300 4296 23.3 40.9 2612 299 4298 13.9
39.5 2713 402 6441 115.6 64.5 2814 403 6440 84.0 62.0 2915 403 6441
58.0 60.1 30
R2= 0.99928
Tire Type P-Metric(sl) LT-Metric LT FloatationP-metric (sl) 240
kPa 350 kPa 240kPaP-metric (xl) Pressure(kPa) 260 370 260LT Metric
Speed (kph) 80 80 80
RR SRC ConditionLoad(N) 70%
T&RA at
Data points listed below are those used for regression
Base Inflation Pressure and Max. Load
Speed (kph):
SRC Speed (kph): RR = P L (a + bV + cV ) over the EPA cyclesand
P and L are the Standard Reference Condition.
RR at other conditions RR at other conditions (N)= Load
(newtons):Inflation (kPa):
Base Inflation(kPa) Max. Load (kg)240 Corresponding T&RA
load for the load
index and size. Single operation load for LT tires
Marked in sidewallT&RA pressure at max. loadLT Metric Speed
(kph) 80 80 80for LT tiresT&RA pressure at max. load
1423-IT Dunlop SP Sport Maxx
TTBlueprintFootprintsPhotographRolling Resistance
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