Can You Put 245/70 R16 Tires On A Jeep That Calls For 225 70 R16?

I am assuming that you have a Jeep Grand Cherokee Limited, 1997 or 1998, with the stock tire size 225/70R16. As per 1010tires.com tire calculator, "Warning! When changing tire sizes, we recommend staying within 3% of the diameter of the original tire.  Any more than this and you face the risk of brake failure."  The below chart will explain the differences in tire size changes for the same vehicle:

Stock Tire - 225/70R16   Tire 1 - 245/70R16   Tire 2 - 235/70R16  
Section Width: 8.85 in   Section Width: 9.64 in Section Width: 9.25 in
Rim Diameter: 16 in   Rim Diameter: 16 in   Rim Diameter: 16 in
Rim Width Range: 6 - 7 in   Rim Width Range: 6.5 - 8 in   Rim Width Range: 6 - 7.5 in
Overall Diameter: 28.40 in      Overall Diameter:  29.50 in Overall Diameter: 28.95 in
Sidewall Height: 6.20 in   Sidewall Height: 6.75 in Sidewall Height: 6.47 in
Radius: 14.20 in   Radius: 14.75 in   Radius: 14.47 in
Circumference: 89.22 in   Circumference: 92.67 in Circumference: 90.94 in
Revs per Mile: 732.3   Revs per Mile: 705.0   Revs per Mile: 718.4
Actual Speed: 60 mph   Speedometer1: 57.7 mph Speedometer1: 58.8 mph
Speedometer Difference: -   Difference: 3.872% too slow Difference: 1.934% too slow
Diameter Difference: -   Difference: 3.73%   Difference: 1.9%

I would not recommend not installing 245/70R16 tires, but 235/70R16 tires. As you can see from the chart above, the difference is too great for 245/70R16 tires, but the 235/70R16 tires are within recommended ranges. These figures are true for all Jeeps with similar sized tires. {I have 4 Jeeps (90 Cherokee, & 97, 98, 99 Grand Cherokees) at home and just bought a 5th (99 Grand Cherokee) for my college age daughter. All Jeeps have over 150,000 miles & still run great: Best 4X4 SUV hands down!}

Some vehicles, such as the 1999 Jeep Grand Cherokee Limited, have minimum and maximum tire specifications. For this Jeep, Minimum are: 225/75 R16 and Maximum is: 245/70 R16.  I've used the Maximum specs for the past two sets (8 tires) and 200K miles with no issues.

I couldnt get 245's they rubbed on the wheel well whenever you turn but fine driving straight I have 235's and they work good and you can tell they are a lot wider than the reg limiteds on the streed