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Question
why the back wheel in the tractor is bigger than the front 
wheel?
 Question Submitted By :: Karuppaiya.m
I also faced this Question!!     Rank Answer Posted By  
 
  Re: why the back wheel in the tractor is bigger than the front wheel?
Answer
# 1
I am sure that there are multiple reasons, but the main
reason the smaller wheels are in front are because they are
for turning. The rear wheels are made for traction and
stability, thus their size.
 
Is This Answer Correct ?    81 Yes 18 No
Kevin
 
  Re: why the back wheel in the tractor is bigger than the front wheel?
Answer
# 2
its not only a case of tractor, but for max. vehicles.
Basically driver wheel is always kept larger than the
driven where all-wheel-drive is not used. Driver wheel is
larger to utilize and conserve torque, as larger the wheel,
more the M.I. ,hence it can attain rotation for longer
duration. But as front wheel is not powered instead it is
just pushed, its M.I. should be less so that it can be
easily rotated,and thus less power is wasted in moving the
wheel. hence to keep MI low, it is of lower size. thats
it
 
Is This Answer Correct ?    45 Yes 28 No
Vedant
 
 
 
  Re: why the back wheel in the tractor is bigger than the front wheel?
Answer
# 3
B'cause the look of the tractor is like that & if small
wheel used look of the tractor will change then we may call
it as car tractor instead of tractor
we do ot wnt to change the name so.
 
Is This Answer Correct ?    7 Yes 137 No
Kailas
 
  Re: why the back wheel in the tractor is bigger than the front wheel?
Answer
# 4
as the radius of the wheel increases the torque also gets
increases....the front wheels are for steering the
vechicle...if the front wheels r big it will be very hard
for the driver to steer it....
 
Is This Answer Correct ?    61 Yes 15 No
Bala10286
[Sona College Of Technology]
 
  Re: why the back wheel in the tractor is bigger than the front wheel?
Answer
# 5
many resons for making small tyre in front of tractor
1. it reduce some aerodynamics resistance
2. steering stability
3. driving comfort
4. traction control
5. torque transmission
 
Is This Answer Correct ?    19 Yes 14 No
Ram Krishan Singh
 
  Re: why the back wheel in the tractor is bigger than the front wheel?
Answer
# 6
Tractors are mainly used for farming purposes where the soil
is loose.
When the driven wheel (rear wheels in tractor) exerts
pressure on the ground the force applied on the ground
depends on the area of inpression the wheel makes on the ground.
Larger the wheel size is, then larger the area of
impression, hence smaller the force on loose soil whch helps
the wheels not to get into the ground.
 
Is This Answer Correct ?    31 Yes 17 No
K L Senthil Kumar
 
  Re: why the back wheel in the tractor is bigger than the front wheel?
Answer
# 7
for rigidity and for larger contact on the field 
Is This Answer Correct ?    7 Yes 22 No
Hussain
 
  Re: why the back wheel in the tractor is bigger than the front wheel?
Answer
# 8
i sure front wheel is smallar than back wheel because
driving easier(turning).and to load many things in back
 
Is This Answer Correct ?    6 Yes 26 No
Ramesh And Vignesh
 
  Re: why the back wheel in the tractor is bigger than the front wheel?
Answer
# 9
Tractor means (traction + motor)so in case of tractor the
requirement of torque is much higher then the other
vehical, as the application where the vehical uses farm,
off-road application dozer and loder, so it needs high
torque in driver wheel to prevent the machine to get slipe.

in tractor there are few speed reduction stages like
transmission, differentail, and final reduction (with bull
gear or planetory) thru bigger tyre can increse the contact
area with soil, which help to increse torque as the torque
(T= r(is the displacement)* f(is the force vector)
 
Is This Answer Correct ?    22 Yes 6 No
Mahesh Lakhani
 
  Re: why the back wheel in the tractor is bigger than the front wheel?
Answer
# 10
because all work is done by tractor from behind like the
field growing & big tyre is at rearend for the balancing &
small tyre in front of the Driver because easy for the
driver to drive it
 
Is This Answer Correct ?    5 Yes 17 No
Akhil
 

 
 
 
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