35s & gas mileage

[ChrisAU]

Check your EGR valve.

 

[LunyTic]

Check your EGR valve.

I did...the EGR, TPS, CTS, etc...all test good.

 

[ctiggs88]

i average 14 mpg in my stock 99 tahoe. ps dont lift it just throw those 35's on there!! 35's would be tiny with a 5.5-6 inch lift

 

[cstiles90]

is a 35 the max tire size on the rcx lift without trimming? im liking the 36x12.50 tsl's

 

[96k1500]

90chevstepside has 37s on his truck with the rcx 6" lift

 

[cstiles90]

hoping to improve my mileage.put a code reader on my truck and all the o2's are bad..so i ordered new ones from amazon pretty cheap.also gonna get the spark plug non foulers as i dont have cats po cut em off..

 

[blue_blood]

i average 14 mpg in my stock 99 tahoe. ps dont lift it just throw those 35's on there!! 35's would be tiny with a 5.5-6 inch lift

I went from 14-15 stock to 12 when i lifted and went to 35's... although i am still currently geared 3.73... i am running the full RCX 6" and there is tons of room for 35's... i am going to try to decrank to 4" and maybe remove the add a leaf to see how that fits.
ps the 12 mpg is if i set cruise control to 55-60 and drive "gently" in town

 

[cstiles90]

I went from 14-15 stock to 12 when i lifted and went to 35's... although i am still currently geared 3.73... i am running the full RCX 6" and there is tons of room for 35's... i am going to try to decrank to 4" and maybe remove the add a leaf to see how that fits.
ps the 12 mpg is if i set cruise control to 55-60 and drive "gently" in town

im getting 12mpg with 32,8 inch tires.but i know my truck needs work

 

[redblazerx]

I had to do some trimming to my front bumper for 33's. Not so much on the bumper but the air dam took alot of cutting. Im averaging 12-14 mpg in my 2WD lifter 7 inches, havent really calculated it tho.......afraid of pissing myself off for lifting it

 

[cstiles90]

i thank ima stay with 35s if all goes as planned.the km2s are cheap in 35s.finally got to take the truck off road and with the tb's cranked i have litterally no flex left in the front end of truck....i thank the shop that cranked em cranked em way to far cuz the front end of my ttruck come up atleast 3 inches.but i cant crank em back down or the tires would rub bad.and i do not wanna trim my truck.