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  #13  
Old 10-21-2009, 08:31 AM
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Re: 07 Grand cherokee Looking for srt8 rims

welcome!
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Old 10-21-2009, 02:18 PM
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Re: 07 Grand cherokee Looking for srt8 rims

Welcome to the Garage!

You can use your current TPMS sensors BUT you should NOT reuse the "gasket washer on the backside or the "gasket nut" on the outside. They are cheap to purchase, too (got mine at a local autoparts store. These gaskets mold to the rim to prevent leaking; if you reuse them at all, you run the risk of a slow leak.
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Old 10-21-2009, 10:24 PM
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Re: 07 Grand cherokee Looking for srt8 rims

Welcome!!!
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  #16  
Old 10-22-2009, 09:47 AM
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Re: 07 Grand cherokee Looking for srt8 rims

welcome to the garage bro!!!! i also have a black truck!!! i also want the black srt reps
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Old 11-02-2009, 02:01 PM
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Re: 07 Grand cherokee Looking for srt8 rims

Dont those tires "275 45 20's" make your speedometer a little off? I compared them to 235 65 17's, the original factory tires on a wj and it says this

Original tire
Sidewall: 6.01 in
Radius: 14.51 in
Diameter: 29.03 in
Circumf: 91.19 in
Revs/mile: 694.79

New Tire
Sidewall: 4.87 in
Radius: 14.87 in
Diameter: 29.74 in
Circumf: 93.44 in
Revs/mile: 678.05

Speedometer reading with new tire is 2.47% too slow.
When your speedometer is reading 60mph you are actually traveling 61.45mph.

If I use the 255 45 20 tire it says this;
Original tire
Sidewall: 6.01 in
Radius: 14.51 in
Diameter: 29.03 in
Circumf: 91.19 in
Revs/mile: 694.79

New Tire
Sidewall: 4.52 in
Radius: 14.52 in
Diameter: 29.04 in
Circumf: 91.22 in
Revs/mile: 694.60

Speedometer reading with new tire is 0.03% too slow.
When your speedometer is reading 60mph you are actually traveling 60.02mph.
Is it better I use the 255 45 20 tire then? any thoughts?
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  #18  
Old 11-02-2009, 02:18 PM
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Re: 07 Grand cherokee Looking for srt8 rims

i have 275/45's now and think they're a little big, im switching to 245/40 in the spring, but thats a 8.5'' rim, not 9'' like the srt8 reps, a tuner can fix any speedo error, not that 1-2 mph at 60 will really matter
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  #19  
Old 11-02-2009, 02:27 PM
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Re: 07 Grand cherokee Looking for srt8 rims

I agree....the 255 is the best IMO...but most guys buy the 275 becasue of the huge selection of tires
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  #20  
Old 11-02-2009, 02:52 PM
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Re: 07 Grand cherokee Looking for srt8 rims

255 is prob the best, I'm only going 245 because i wanted a smaller diameter, and a little less weight
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  #21  
Old 11-08-2009, 08:57 PM
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Re: 07 Grand cherokee Looking for srt8 rims

Welcome to the garage
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