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Changing tire size

  #1  
Old 07-28-2009, 11:48 PM
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Default Changing tire size

I need to replace 3 tires on my S-10 '02 Blazer (4th tire already replaced a few months ago). I had decided to get Kumho SR21s (on recommendation from an S-10 truck owner). However, my local Discount Tire center says that 235-70s are not a size they keep in stock. They could get them quickly enough but it was suggested that I get the next larger size 235-75 not just because they had them readily available but because they were much cheaper. Is there anything I should consider with this change in tire size?

Although it is a 4WD, that is not a feature I would expect to use very often. However, I do live in an area with a lot of places for off-roading so I do want to be prepared for those occasions. We never have snow but there is a good possibility that I may be driving in it in more northern locations. Is this a good tire to suit those purposes?

http://www.discounttire.com/dtcs/findTireDetail.do?r=AZEINT|pc|85206&pc=33701&ar=70 &rd=15&cs=235
 
  #2  
Old 07-28-2009, 11:55 PM
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that tire looks like it will do very well with on road situations, but if you were to go offroad with it i would try and stay away from mud(unless you have buddies who can pull you out) as far as tire size is concerned i would strongly suggest keeping all 4 tires the same size otherwise youll run into problems.
 
  #3  
Old 07-29-2009, 12:46 AM
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Thank you, it is pretty dry here but I will be sure and avoid mud if I should see it.

I didn't mean to mix the tire sizes just trying to figure out if I should get 3 tires of the same size as my one good tire or get 4 new ones at the larger size. There is almost no difference in price.

Is there any reason to not switch over to the 235-75s?
 
  #4  
Old 07-29-2009, 12:56 AM
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I would go with the more common 235-75s and use the 235-70 as a spare.
 
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Old 07-29-2009, 07:38 AM
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Whatever you decide... stick with the same size tires... Talking to a friend who's a ford mechanic, (I know I know) someone with a crown vic had 3 tires larger than 1... that one wheel kept locking up, something with the ABS or TCS thinking the wheel was spinning... only problem is it'd lock up at 70mph.
 
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Old 07-29-2009, 11:40 AM
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whats the differnts in the 235-70 to the 235-75, is it taller or wider, or a little of both
 
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Old 07-29-2009, 12:54 PM
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the 75 is about .5" taller than the 70.
 
  #8  
Old 08-11-2009, 10:22 PM
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Thanks for the feedback and advice! I've got all new tires now (the Kumhos), so I'm riding much smoother and more secure.
 
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