30x9.50x15 vs. 235/75/15 Gas mileage, power loss? - JeepForum.com
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > ZJ Grand Cherokee Forum > 30x9.50x15 vs. 235/75/15 Gas mileage, power loss?

Bilstein Blowout Sale - 4 5100 Series Shocks $309.99 shippSALE PRICING, Specials, Huge Savings Alloy USA and Posi-LoPoison spyder items @ oconee off road 706 534 9955

Unread 04-13-2011, 05:43 PM   #1
Registered User
1996 XJ Cherokee 
Join Date: Dec 2005
Location: Louisville, Ky
Posts: 583
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?

1996 Cherokee Country 4x4
citRon is offline   Reply With Quote
Unread 04-13-2011, 06:57 PM   #2
Registered User
1994 ZJ 
Join Date: Aug 2010
Location: , CT
Posts: 2,381
its only an inch difference in diameter. i wouldnt worry too much about power loss with 30" tires.
Freestyle713 is offline   Reply With Quote
Unread 04-13-2011, 08:18 PM   #3
Registered User
1998 ZJ 
Join Date: Nov 2009
Location: Rochester NY
Posts: 2,652
you will barely notice, if you even do.
'98 ZJ on 37s and tons
'97 Cummins 2500
KingtheZJ is offline   Reply With Quote
Unread 04-13-2011, 10:04 PM   #4
Registered User
1995 ZJ 
Join Date: Jan 2011
Location: Alexandria, Virginia
Posts: 695
That isn't a difference worth worrying over, 30's vs 235's, depending on the manufacturer 235's can be almost 30".
TheHalfWit is offline   Reply With Quote
Thread Tools

Suggested Threads

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.