30x9.50x15 vs. 235/75/15 Gas mileage, power loss? - JeepForum.com
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Unread 04-13-2011, 05:43 PM   #1
citRon
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1996 XJ Cherokee 
 
Join Date: Dec 2005
Location: Louisville, Ky
Posts: 594
30x9.50x15 vs. 235/75/15 Gas mileage, power loss?

Okey doke, So Donald Duck -my '97 4.0 has the ugly 'sport/canyon/ 15x7 rims on it, currently wearing some 225/75/15 Khumo girly tires on it.

Today I scored 4 Ecco rims with 2 good 30x9.50x15 General Grabbers for $80 bucks . So I threw one of them on and I like the look, fits good.

So...I was going to only go with 235/75/15's on them when I bought new tires, but if I can find a couple more General Grabbers cheap, I might go that route.
-Question is how much power loss and gas mileage would I lose going with the 30's vs. 235's?

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Unread 04-13-2011, 06:57 PM   #2
Freestyle713
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1994 ZJ 
 
Join Date: Aug 2010
Location: , CT
Posts: 2,380
its only an inch difference in diameter. i wouldnt worry too much about power loss with 30" tires.
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Unread 04-13-2011, 08:18 PM   #3
KingtheZJ
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you will barely notice, if you even do.
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Unread 04-13-2011, 10:04 PM   #4
TheHalfWit
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1995 ZJ 
 
Join Date: Jan 2011
Location: Alexandria, Virginia
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That isn't a difference worth worrying over, 30's vs 235's, depending on the manufacturer 235's can be almost 30".
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