235/65R17 is 0.6″ taller than 225/65R17 on average, going by the heights their makers list (28.5″ vs 29.1″). On paper the gap is 0.51″.
Going from 225/65R17 to 235/65R17.
Lift is half the height difference, since the axle sits at the middle of the tire. The speedometer figure assumes it was set for 225/65R17 and uses the revolutions per mile the makers publish: at an indicated 60 mph you'd be doing 61.2 mph.
The same model in each size, by the heights the maker lists. Averages where a model comes in several load ranges.
| Tire | 225/65R17 ″ | 235/65R17 ″ | Taller by | Heavier by |
|---|---|---|---|---|
| BFGoodrich Advantage Control | 28.50 | 29.06 | +0.56″ | +1.7 lb |
| BFGoodrich All-Terrain T/A KO3 | 28.50 | 29.10 | +0.60″ | +0.1 lb |
| BFGoodrich Trail-Terrain T/A | 28.50 | 29.10 | +0.60″ | −0.3 lb |
| BFGoodrich Trail-Terrain T/A+ | 28.50 | 29.10 | +0.60″ | +2.6 lb |
| General AltiMAX Arctic X | 28.50 | 29.00 | +0.50″ | +3.7 lb |
| General AltiMAX RT45 | 28.50 | 29.00 | +0.50″ | +0.9 lb |
| General AltiMAX365 AW | 28.50 | 29.00 | +0.50″ | +1.4 lb |
| Michelin CrossClimate2 | 28.50 | 29.10 | +0.60″ | +0.5 lb |
| Michelin Defender2 | 28.50 | 29.00 | +0.50″ | +0.8 lb |
| Michelin Primacy All Season | 28.50 | 29.10 | +0.60″ | +2.2 lb |
| Michelin X-Ice Snow | 28.50 | 29.06 | +0.56″ | +2.2 lb |
| Toyo Celsius II | 28.50 | 29.05 | +0.55″ | +0.9 lb |
| Toyo Extensa A/S II | 28.50 | 29.05 | +0.55″ | +0.4 lb |
| Toyo OPEN COUNTRY Q/T | 28.50 | 29.05 | +0.55″ | +1.4 lb |
| Toyo Observe G3-Ice | 28.50 | 29.05 | +0.55″ | +2.2 lb |
| Toyo Open Country A/T III | 28.50 | 29.05 | +0.55″ | −1.4 lb |
| Toyo Open Country H/T II | 28.50 | 29.05 | +0.55″ | +1.7 lb |
| Toyo Proxes G-Tour | 28.50 | 29.10 | +0.60″ | +1.8 lb |
| Toyo Proxes ST III | 28.50 | 29.05 | +0.55″ | +2.2 lb |
0.55″ on average, going by the heights tire makers list: 225/65R17 tires are listed at 28.50″ and 235/65R17 at 29.00–29.10″. The size codes work out to 28.52″ and 29.03″, a 0.51″ difference.
The tire's radius grows by 0.28″, so the axle sits about 0.28″ higher, and the top of the tread comes 0.28″ closer to the fender. 235/65R17 is also 0.39″ wider on paper, 0.20″ per side on the same wheel. Whether it fits depends on your vehicle, lift and wheel offset.
Yes. If it's set for 225/65R17, it will read about 1.9% slow: at an indicated 60 mph you'll be doing 61.2 mph. Worked out from the revolutions per mile the makers publish.
Both fit a 17-inch wheel. Wheel widths approved for both run from 6.5″ to 8.0″.